20-5y=100

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Solution for 20-5y=100 equation: 


Simplifying
20 + -5y = 100

Solving
20 + -5y = 100

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 + -5y = 100 + -20

Combine like terms: 20 + -20 = 0
0 + -5y = 100 + -20
-5y = 100 + -20

Combine like terms: 100 + -20 = 80
-5y = 80

Divide each side by '-5'.
y = -16

Simplifying
y = -16

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