40-y=180

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Solution for 40-y=180 equation: 


Simplifying
40 + -1y = 180

Solving
40 + -1y = 180

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + -1y = 180 + -40

Combine like terms: 40 + -40 = 0
0 + -1y = 180 + -40
-1y = 180 + -40

Combine like terms: 180 + -40 = 140
-1y = 140

Divide each side by '-1'.
y = -140

Simplifying
y = -140

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