How do you solve #8x-5y= -46# and #8x+ 86=y# using substitution?
You have the value for y. This makes substitution easier.
Distribute terms and combine like terms.
We are left with
Solve for x by isolating it.
Add 430 to both sides
Divide both sides by -32
Oops. Forgot to solve for y.
Plug the value in for x into one of the equations.
Add 96 to both sides.
Divide both sides by -5
Now, check your answers. Plug -12 for x and -10 for y in the second equation.