SOLUTION: 18)Solve the system of equations by the addition method.
x/4-y/12=-1
x/3+y/9=-2
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Question 382115: 18)Solve the system of equations by the addition method.
x/4-y/12=-1
x/3+y/9=-2
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
x/4-y/12=-1
multiply by12
3x-y=-12.................1
x/3+y/9=-2
multiply by 9
3x+y = -18................2
...
add 1 & 2
6x=-12-18
6x=-30
/6
..
plug value of x in 1
3*-5-y=-12
-15-y=-12
-15+12=y
...
m.ananth@hotmail.ca
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