-y+20=159

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Solution for -y+20=159 equation: 


Simplifying
-1y + 20 = 159

Reorder the terms:
20 + -1y = 159

Solving
20 + -1y = 159

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + -1y = 159 + -20

Combine like terms: 20 + -20 = 0
0 + -1y = 159 + -20
-1y = 159 + -20

Combine like terms: 159 + -20 = 139
-1y = 139

Divide each side by '-1'.
y = -139

Simplifying
y = -139

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