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In order to solve the following system of equations by addition which could you do before adding the equations so that one variable will be eliminated when you add them?
Multiply the top equation by -3 and the bottom equation by 2.
How do you solve differential equations?
I assume that you mean that you are given a differential equation dy/dx and want to solve it. If that is the case, then you would multiply by dx on both sides and then integrate both the left and right sides of the equation.
What do you do when you have a negative variable?
When you have a negative variable in an equation that you are trying to solve for, you multiply each side of the equation by -1. If it is an inequality such as <, you would flip the sign to > and vice versa.
How do you solve the equation i equals prt?
I=Prt is a multiplication problem. All you need is the Principle, rate, and time. Then you multiply then together.
How do you solve proportions?
To solve proportions, you need to set up a ratio equation where two ratios are equal to each other. Cross-multiply by multiplying the numerator of the first ratio by the denominator of the second ratio, and vice versa. Then solve for the variable by dividing both sides of the equation by the coefficient of the variable. Finally, check your solution by plugging it back into the original proportion to ensure it balances.
How is a proportion changed into a mathematical equation?
a proportion is an equation. a / b = c / d cross multiply: ad = bc then solve
16 is 49 percent of what number?
To find the answer to this you will need to create a proportion with one variable. Then cross multiply and finally solve a one-step equation. Set it up like this:49/100 = 16/NThen cross multiply:16 x 100 = 49 x N1600 = 49NThen solve the one-step equation to find your answer.Hope this helps.
What is x if x over 1 point 2 equals negative 7?
cross multiply you lazy bumAnother AnswerSet up the equation and solve: x/1.2 = -7 (next divide both sides of the equation by 1.2 to solve for x)x = -5.8333
How To Solve A Proportion?
To solve a proportion, you cross multiply. For example, if this was the proportion: 2/4 = 3/x, you would multiply 2 with x and 4 with 3. The products will be used in your next equation. In this case, your next equation is 2x = 12. Now you want to isolate x, so divide by two for both sides. Your answer will be x = 6.
How do you solve for missing sides in similar figures?
set up a proportion. cross multiply. solve
What is the answer to this equation 100 over 87 is equal to Y over 4200?
cross multiply to solve: 100 x 4200 = 87 Y solve for Y by doing 420,000 divided by 87, which equals 4828 (rounded off)
How do you solve a proportional?
You can cross-multiply or go on Google for more help...
How do you find the value of a variable of a proportional ratio?
Cross multiply then solve for the variable.
How do you solve equations involving fractional coefficients?
multiply the whole equation by the number in the denominator
What is the number that you would multiply one or both of the equations -4 equals 5y equals 6 -6x-y equals 8?
There is no need. The first equation can be rearranged to a simple equation in just y. Multiply it by 0.2 to solve for y. Substitute the value of y in the second equation and rearrange to get a simple equation in x. Multiply by (1/6) to find x.
Who to solve math matrix and deteminents in math?
determinents - you cross multiply and find the difference.
What should be done to both sides of the equation in order to solve equals -12.4?
Multiply by 4
