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Which expression can you substitute in the indicated equation to solve the system of equations shown below?

4x + 3y = 4

3x + y = -2

Which expression can you substitute in the indicated equation to solve the system of equations shown below 4x 3y 4 3x y 2 class=

Respuesta :

The answer must be -3x-2 because when you bring y to the other side, y becomes negative. So it would be 3x= -2-y. Bring the 2 to the other side, it becomes positive. So.. 3x+2=-y. To get a positive y, we have to divide everything by -1. So it becomes -3x-2=y. Hope this helps