80-y=20

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Solution for 80-y=20 equation: 


Simplifying
80 + -1y = 20

Solving
80 + -1y = 20

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 + -1y = 20 + -80

Combine like terms: 80 + -80 = 0
0 + -1y = 20 + -80
-1y = 20 + -80

Combine like terms: 20 + -80 = -60
-1y = -60

Divide each side by '-1'.
y = 60

Simplifying
y = 60

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