Question

Use elimination using multiplication to solve 2x-y=-1
3x-2y=1

Answer 1

x = -3 and y = -5

Explanation:

2x - y = -1 ⇒ y = 2x + 1

Substitute this into 3x - 2y = 1 to solve for x:

3x - 2(2x + 1 ) = 1 ⇒ 3x - 4x - 2 = 1 ⇒ -x = 3 ⇒ x = -3

Now sub the value you found for x into y = 2x + 1 to find y:

y = 2(-3) + 1 = -5

So x = -3 and y = -5