SOLUTION: -2x=-y+9 X=4y-15

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Question 704034: -2x=-y+9
X=4y-15
Answer by sachi(548) About Me  (Show Source):
You can put this solution on YOUR website!
-2x=-y+9...a
X=4y-15....b
substituting the value of x from b in a
-2(4y-15)=-y+9
or -8y+30=-y+9
or -y+8y-30-9
or 7y=21
or y=3
from b
x=4*3-15=-3
ans