Question

Asked Oct 26, 2019

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Solve the system by substitution

-3x+4y= -1

4x+8y= -12

Step 1

We have equations :-3x+4y= -1, 4x+8y= -12.

Let us isolate equation (2) for x first.

Dividing equation (2) by 4 .

Then subtracting 2y on both sides.

Step 2

Substituting x=-3-2y in first equation -3x+4y=-1 and solve for y.

We got y=-1.

Step 3

Plugging y=-1 in x=-3-2...

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