Question

2x - 3y = -1
y = x - 1

Answer 1

X would equal 2 (x=2)

Explanation:

For this problem, we can use the substitution method. First plug in y.

`2x-3(x-1)=-1`

We can then simplify the equation by multiplying -3 to (x-1),

`2x-3x+1=-1`

Now, combine the x's.

`-x+1=-1`

Subtract 1 from both sides.

`-x=-2`

Because x must be positive, we have to divide by -1 on both sides.

`x=2`

Answer 2

Explanation:

x=4

y=3

(2×4)- (3 ×3)= -1

8 - 9 = -1

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