SOLUTION: Solve by the substitution method 8x-4y= -84 4x + 45 = y 6m+n=29 m-6n=48 4x+9y=51 -4x+y=19 5x+2y=-9 -5x+y=33

Algebra ->  Expressions-with-variables -> SOLUTION: Solve by the substitution method 8x-4y= -84 4x + 45 = y 6m+n=29 m-6n=48 4x+9y=51 -4x+y=19 5x+2y=-9 -5x+y=33       Log On


   

Question 391836: Solve by the substitution method
8x-4y= -84
4x + 45 = y
6m+n=29
m-6n=48
4x+9y=51
-4x+y=19
5x+2y=-9
-5x+y=33
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
8x-4(4x+45)=-84
8x-16x-180=-84
-8x=96
x=-12
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8*-12-4y=-84
-96-4y=-84
-4y=12
y=-3
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4*-12+45=-3