2y=3(-x+5)
Distributed property
2y= -3x +15
Move x term to left side to get
3x+2y=15
Answer:
He could use y+3x=-4
Step-by-step explanation:
When we subtract 3x on both sides, we get y=-4-3x, which means we just solved a variable and can substitute into the other equation 2x-3y=-21
Answer:

Step-by-step explanation:
I'm going to presume you want this linear equation in slope-intercept form, so start with:

Subtract
from both sides of the equation:

Subtract
from both sides of the equation:

Divide both sides of the equation by the coefficient of
, which is
:

Simplify:

4(-3)-3/(-3)+6
-12-3/-3+6
-12+1+6
-12+7
-5