2(y-40)=78

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Solution for 2(y-40)=78 equation: 


Simplifying
2(y + -40) = 78

Reorder the terms:
2(-40 + y) = 78
(-40 * 2 + y * 2) = 78
(-80 + 2y) = 78

Solving
-80 + 2y = 78

Solving for variable 'y'.

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

Add '80' to each side of the equation.
-80 + 80 + 2y = 78 + 80

Combine like terms: -80 + 80 = 0
0 + 2y = 78 + 80
2y = 78 + 80

Combine like terms: 78 + 80 = 158
2y = 158

Divide each side by '2'.
y = 79

Simplifying
y = 79

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