20-y+20=2y-20

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Solution for 20-y+20=2y-20 equation:


Simplifying
20 + -1y + 20 = 2y + -20

Reorder the terms:
20 + 20 + -1y = 2y + -20

Combine like terms: 20 + 20 = 40
40 + -1y = 2y + -20

Reorder the terms:
40 + -1y = -20 + 2y

Solving
40 + -1y = -20 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
40 + -1y + -2y = -20 + 2y + -2y

Combine like terms: -1y + -2y = -3y
40 + -3y = -20 + 2y + -2y

Combine like terms: 2y + -2y = 0
40 + -3y = -20 + 0
40 + -3y = -20

Add '-40' to each side of the equation.
40 + -40 + -3y = -20 + -40

Combine like terms: 40 + -40 = 0
0 + -3y = -20 + -40
-3y = -20 + -40

Combine like terms: -20 + -40 = -60
-3y = -60

Divide each side by '-3'.
y = 20

Simplifying
y = 20

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