Math
Solve for - 3x - 3y = - 15 and - 3x + y = 5
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Asked by
AnneS2
Last updated by
anonymous
- 3x + y = 5
- 3x +3x+ y = 5+3x
y = 5+3x
- 3x - 3y = - 15
- 3x - 3(5+3x) = - 15
- 3x - 3(5) (-3)(+3x) = - 15
- 3x - 15-9x= - 15
- 15-12x= - 15
- 15+15-12x= - 15+15
-12x=0
-12x/-12=0/-12
x=0
y = 5+3x
y = 5+3(0)
y=5+0=5