Question

What is the solution to this system of equation? x=2y-4 7x+5y= -66

Answer 1

Answer:

Step-by-step explanation:

oh gosh

im sorry but idk how to solve that, mabye if i say you are smart you will be motivated?

Answer 2

Answer:

x=-8 y=-2

Step-by-step explanation:

substitute x for 2y-4

7(2y-4)+5y=-66

factor

14y-28+5y=-66

add 28 on both sides

14y+5y=-38

19y=-38

divide by 19 on both sides

y=-(38/19)

y=-2

Plug -2 into the first equation for y

x=2(-2)-4

x=-4-4

x=-8