4x - 5y = -9
-4x + y = -7
Step 1
Eliminate variable x
Different sign eliminate x and add.
-5y + y = -9 + (-7)
- 4y = -9 - 7
- 4y = -16
y = -16/-4
y = 4
Step 2
Substitute y in any equation and find x.
-4x + y = -7
-4x + 4 = -7
-4x = -7 - 4
-4x = -11
x = -11/-4
x = 11/4
X = 11/4 Y = 4
