Question

Solve the system by substitution.
x + 3y = –4
2x + 2y = –8

Answer 1

Solve for x and then plug that into the second equation

Answer 2

A ) x + 3y = -4
B) 2x + 2y = -8
A + B = ?
then you can solve it...

Answer 3

3x+5y+-12

Answer 4

@PFEH.1999 it says by substitution :P

Answer 5

Oh sorry!I didn't read the question!
SORRY!

Answer 6

\[x + 3y = –4 \implies x= -3y-4 \implies 2(-3x-4)+2y=-8 \implies y=0\]\[\implies x=-4 \implies (x,y)=(-4,0)\]

Answer 7

x=-3y-4
2(-3y-4)+2y=8

Решите для Y

Answer 8

I have an error in the first line, should be -3y, not -3x.