change the subject of the formula

make x the Subject of the formula

y = 1/2 x + 1
-2 from both sides
y-2 = 1/2 x
÷ by 1/2 from both sides
y-2/1/2 = x

1. (1/2) x = y - 1

x = 2 y - 2

posted by Damon

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