Asked by Logan

Use addition or substitution to find the value of y for this set of equations.

4x + 13y = 40
4x + 3y = -40
Answered by Reiny
I would subtract them to get
10y = 80
y = 8
back into the second:
4x + 24 = -40
4x = -64
x = -16
Answered by Devin
Use addition or substitution to find the value of x for this set of equations.

2x - 3y = -15
x = 4y