Question 563492: x=2y
y=x-2
Answer by Maths68(1474)   (Show Source):
You can put this solution on YOUR website! x=2y............(1)
y=x-2...........(2)
Substitute the value of x from (1) to (2)
y=2y-2
y-2y=-2
-y=-2
Multiply by -1 both sides of the above equation
-y(-1)=-2(-1)
y=2
Put the value of y in (1)
x=2y
x=2(2)
x=4
x,y=4,2
Check
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Put the value of x and y in (1)
x=2y
4=2(2)
4=4
Put the value of x and y in (2)
y=x-2...........(2)
2=4-2
2=2
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