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13-09-2021
Mathematics

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A math student has a plan to solve the following system by the elimination method. To eliminate the x-terms, he wants to multiply the top equation by 7. What should he multiply the second equation by so that when he adds the equations, the x-terms are eliminated?
-3x-7y= -56
-7x+10y= 1

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anasweeney43 anasweeney43

13-09-2021

Answer:

By - 3 (negative three)

Step-by-step explanation:

7 (-3x) = - 21x

- 3 (-7x) = 21x

-21x + 21x = 0

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