Answer:
7x + 3y = - 1
x + y = - 3
Find what y (Or x, but make sure you find the same variable for both equations) is:
3y = - 7x - 1
y = - 7/3x - 1/3
y = - x - 3
Substitute:
- 7/3x - 1/3 = - x - 3
Solve for x (Or y, depending on which one you used):
4/3x = 2 2/3
x = 2
Plug x (Or y) into one of the equations:
2 + y = - 3
y = - 5
Answer: x = 2, y = -5
