Solving systems by substitution
y=-7x - 16
2x +8y = -20
First, we can substitute the value of y from the first equation into the second equation:
2x + 8(-7x - 16) = -20
2x - 56x - 128 = -20
-54x - 128 = -20
Now, we can solve for x:
-54x = -108
x = 2
Now that we have the value of x, we can substitute it back into the first equation to solve for y:
y = -7(2) - 16
y = -14 - 16
y = -30
Therefore, the solution to the system of equations is x = 2 and y = -30.