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if you have one equation that gives you x or y
use substitution
x+3y=18
x= 18-3y
substitute (18-3y) for x in the other equation
if you have coefficients that will not 'reduce'
use elimination
2x+3y= -3
5x-4y=9
watch for equations that will reduce
2x+4y= -8
divide through by 2
x+2y= -4
x= -4-2y
What else can I help you with?
What is the difference between sum and difference?
sum is addition difference is subtraction
What is the difference between the inverse of addition and the inverse of multiplication?
the inverse of addition is subtraction and the inverse of multiplication is division. Of course, multiplication is just repeated addition so division is just repeated subtraction!
What is the difference between 392 and 247?
What is the difference between 392 and 247?
What is the difference between two numbers is 10 If the numbers are doubled what is What is the difference between them?
the difference is also doubled
What number represents the difference between two equal fractions?
There is no difference in value between "equal" fractions: the difference is zero.
Difference between export promotion and import substitution?
what is d difference between import substitution and export promotion
What are the differences between elimination and substitution when it comes to managing a keyword strategy?
In managing a keyword strategy, elimination involves removing underperforming keywords, while substitution involves replacing them with more effective ones.
Difference between substitution and transposition cipher?
The difference between substitution and transposition is that in:Subtitution:each letter retains its position but changes its identity,Transposition:each letter retains its identity but changes its position.
Is reaction between ethanoic acid sodium hydroxide an eliminatin substitution addition or rearrangement.?
The reaction between ethanoic acid (acetic acid) and sodium hydroxide is a double replacement one. Normally a reaction between an acid (acetic acid in this case) and a base (like NaOH) involves neutralization, which in turn produces water.
What are the differences between elimination and substitution reactions in organic chemistry?
In organic chemistry, elimination reactions involve the removal of atoms or groups from a molecule to form a double bond or a new functional group. Substitution reactions, on the other hand, involve the replacement of an atom or group in a molecule with another atom or group.
What is the difference between substitution reaction and addition reaction?
In a substitution reaction, one group is replaced by another in a molecule, while in an addition reaction, two or more reactants combine to form a single product. Substitution reactions typically involve the exchange of an atom or group with another, while addition reactions involve the addition of atoms or groups to an unsaturated molecule to form a saturated product.
What are the key differences between the Hofmann and Zaitsev elimination reactions?
The key difference between Hofmann and Zaitsev elimination reactions lies in the regioselectivity of the products formed. In Hofmann elimination, the least substituted alkene is the major product, while in Zaitsev elimination, the most substituted alkene is the major product. This difference is due to the stability of the alkene products formed in each reaction.
What is the difference between sum and difference?
sum is addition difference is subtraction
What is the difference between vector addition and algebraic addition?
There is no difference between vector addition and algebraic addition. Algebraic Addition applies to vectors and scalars: [a ,A ] + [b, B] = [a+b, A + B]. Algebraic addition handles the scalars a and b the same as the Vectors A and B
What is the difference between gauss elimination and gauss Jordan?
Gaussian elimination as well as Gauss Jordan elimination are used to solve systems of linear equations. If, using elementary row operations, the augmented matrix is reduced to row echelon form, then the process is called Gaussian elimination. If the matrix is reduced to reduced row echelon form, the process is called Gauss Jordan elimination. In the case of Gaussian elimination, assuming that the system is consistent, the solution set can be obtained by back substitution whereas, if the matrix is in reduced row echelon form, the solution set can usually be obtained directly from the final matrix or at most by a few additional simple steps.
What is the difference between the substitution method and the linear combination method?
well,both are different methods but the answers are same.
What is the difference between drug elimination and excretion?
Elimination is carried out by 2 process - biotransformation and - excretionExcretion means complete removal of drug and its metabolites from internal nvironment to external enviroment.
