Question

solve using substitution.
-8x + 5y = -7
x = -1
(□,□)
submit

Explanation:

Step1: Substitute \( x = -1 \) into the first equation

We have the equation \( -8x + 5y = -7 \). Substitute \( x=-1 \) into it:
\( -8\times(-1)+5y=-7 \)

Step2: Simplify and solve for \( y \)

First, calculate \( -8\times(-1)=8 \), so the equation becomes:
\( 8 + 5y = -7 \)
Subtract 8 from both sides:
\( 5y=-7 - 8 \)
\( 5y=-15 \)
Divide both sides by 5:
\( y=\frac{-15}{5}=-3 \)

Answer:

\((-1, -3)\)