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How do you find value of x and y in the sums 2x plus 3y equals 7 and 3x plus 2y equals 3?
Wiki User
∙ 14y ago
Treat it as a simultaneous equation and solve it by the elimination method:
3(2x+3y = 7)
2(3x+2y = 3)
Multiply all terms in the top equation by 3 and in the bottom eqation by 2:
6x+9y = 21
6x+4y = 6
Subtract the bottom equation from the top equation:
5y = 15
Divide both sides by 5 to find the value of y:
y = 3
Substitute the value of y into the original equations to find the value of x:
Therefore: x = -1 and y = 3
Wiki User
∙ 14y ago
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Would you Prove If a equals b and c d then a plus c b plus d?
If a=b and c=d then (a+c)=(b+d) ? This is proved very simply by the direct application of perhaps the most fundamental statement in all of Algebra: "If equals are added to equals, the sums are equal."
How do you plot partial sums vs terms?
I will give an example.1) You pretend like the last two digits of the two numbers are not there. In this case you would do 400 plus 300 equals 700. Then move on:90 plus 30 equals 120. 8 plus 7 equals 15. Then add the numbers together.PARTIAL SUMS398 + 437______700120+ 15835
What is 100 plus 200 plus 1000 equals?
You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions than posting the question on WA. I could tell you the answer but how can you be sure that I did not make a mistake? Or that I am not messing about?
What expression shows the value of the sum of x and 6?
The answer is x + 6. The plus sign (+) is used to indicate sums. A sum is the result of addition and + indicates the addition operator.
Without adding, find which sum is greater.A+HNeither; the sums are equalE+C?
Neither; the sums are equal.
Which has the same value as 38 plus 29?
Lots of sums. 39 plus 28, for example.
WHY plus - equals TO-NOT plus?
Thing of it this way, you are adding negativity, therefore you are taking away positivity, which is what the numbers you are working with are, when doing adding sums.
Quadratic equation in standard form is written ax2 plus bx plus c equals 0 where a b and c are real numbers and a is not zero?
Yes that about sums it up.
Would you Prove If a equals b and c d then a plus c b plus d?
If a=b and c=d then (a+c)=(b+d) ? This is proved very simply by the direct application of perhaps the most fundamental statement in all of Algebra: "If equals are added to equals, the sums are equal."
What 21 plus 43 plus 17 plus 67 plus 59 equals?
You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions. I could tell you that the answer is 207 but how can you be sure that I did not make a mistake? Or that I am not messing about?
How do you plot partial sums vs terms?
I will give an example.1) You pretend like the last two digits of the two numbers are not there. In this case you would do 400 plus 300 equals 700. Then move on:90 plus 30 equals 120. 8 plus 7 equals 15. Then add the numbers together.PARTIAL SUMS398 + 437______700120+ 15835
What are these sums in roman numeral 60 plus 40 equals 5-40 equals please add more if you know any more thank you?
60 + 40: lx + xl = c 5 - 40: v - xl = -xxxv
What is 5 plus 5 plus 7 plus 1 plus 1 equals?
You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions than posting the question on WA. But since you seem unable to carry out even this simple task, the answer is 19.
What is the sum of 1.055 plus 0.863 show your work with partial sums?
1.918 is the answer Partial Sums: 1.055 +.863 ----------- 1.918
What is 100 plus 200 plus 1000 equals?
You should use your calculator for such simple sums. It is far quicker and involves fewer key depressions than posting the question on WA. I could tell you the answer but how can you be sure that I did not make a mistake? Or that I am not messing about?
What expression shows the value of the sum of x and 6?
The answer is x + 6. The plus sign (+) is used to indicate sums. A sum is the result of addition and + indicates the addition operator.
What is the partial sums answer to 714 plus 465?
2173 is a answer
