Math
Solve - 3x - 2y = - 18 and - 4x - 4y = - 20
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Asked by
AnneS2
Last updated by
anonymous
- 4x - 4y = - 20
- 4x - 4y+4y = - 20+4y
-4x= - 20+4y
-4x/-4= - 20/-4+4y/-4
x=5-y
- 3x - 2y = - 18
- 3(5-y) - 2y = - 18
- 3(5) (-3)(-y) - 2y = - 18
-15+3y-2y=-18
-15+y=-18
-15+y+15=-18+15
y=-3
x=5-y
x=5--3
x=5+3=8