20-3y+y=120

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Solution for 20-3y+y=120 equation: 


Simplifying
20 + -3y + y = 120

Combine like terms: -3y + y = -2y
20 + -2y = 120

Solving
20 + -2y = 120

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 + -2y = 120 + -20

Combine like terms: 20 + -20 = 0
0 + -2y = 120 + -20
-2y = 120 + -20

Combine like terms: 120 + -20 = 100
-2y = 100

Divide each side by '-2'.
y = -50

Simplifying
y = -50

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