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Algebra
Pregunta

3. A math student has a plan to solve the followin...

3. 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? 

\( - 3 x - 7 y = - 56 \) 

\( - 7 x + 10 y = 1\) 

Answer

-3

Solución
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