SOLUTION: Half the number y is equal to y minus ten.

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Question 520858: Half the number y is equal to y minus ten.
Answer by Maths68(1474) About Me  (Show Source):
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Half the number y is equal to y minus ten.
1/2(y)=y-10
y/2=y-10
2*(y/2)=2*(y-10)
y=2y-20
y-2y=-20
-y=-20
Multiply by -1 both sides
y=20