Question

Solve each system by substitution:

12x+3y=8
y=-4x-1
and if you know any sites where I can just input the equation and it fixes it then that would be equally helpful because I am dimwitted

Answer 1

No Solution / NS

Explanation:

Plug in the bottom equation into the top!

12x + 3(-4x-1) = 8 | The bottom equation is replacing the y on the top equation

Then solve it!

12x - 12x - 3 = 8

-3 = 8

NS

Answer 2

`12x + 3(4x - 1) = 8 \\ 12x + 12x - 3 = 8 \\ 24x = 8 + 3 \\ x = (11)/(24) = 0.4`