Question 1038120
Eqn #1: 4x+3y=-5
Eqn #2: x=y-3
-----------------
"Substitute" the value for x given in Eqn #2 into Eqn #1:
{{{4x+3y=-5}}}
{{{4(y-3)+3y=-5}}}
Solve for y:
{{{4y-12+3y=-5}}}
{{{7y-12=-5}}}
{{{7y=7}}}
{{{highlight(y=1)}}}
Now plug this result into Eqn. #2 to find x. I'll leave that part to you.
=======================
Good Luck,
tutor_paul@yahoo.com