Question

Please answer ASAP im in desperate need of help!!!

Answer 1

I'm stuck on that one too

Answer 2

5. replace y in the second equation
4x + 5(3x+9) = 7
4x +15x + 45 = 7
19x+45=7
-45 -45
19x = -38
x=-2
idk what linear combination is im sorry