280-y=157

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Solution for 280-y=157 equation: 


Simplifying
280 + -1y = 157

Solving
280 + -1y = 157

Solving for variable 'y'.

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

Add '-280' to each side of the equation.
280 + -280 + -1y = 157 + -280

Combine like terms: 280 + -280 = 0
0 + -1y = 157 + -280
-1y = 157 + -280

Combine like terms: 157 + -280 = -123
-1y = -123

Divide each side by '-1'.
y = 123

Simplifying
y = 123

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