2(y-1)=40

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Solution for 2(y-1)=40 equation: 


Simplifying
2(y + -1) = 40

Reorder the terms:
2(-1 + y) = 40
(-1 * 2 + y * 2) = 40
(-2 + 2y) = 40

Solving
-2 + 2y = 40

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + 2y = 40 + 2

Combine like terms: -2 + 2 = 0
0 + 2y = 40 + 2
2y = 40 + 2

Combine like terms: 40 + 2 = 42
2y = 42

Divide each side by '2'.
y = 21

Simplifying
y = 21

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