12=2y+20

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Solution for 12=2y+20 equation:


Simplifying
12 = 2y + 20

Reorder the terms:
12 = 20 + 2y

Solving
12 = 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.
12 + -2y = 20 + 2y + -2y

Combine like terms: 2y + -2y = 0
12 + -2y = 20 + 0
12 + -2y = 20

Add '-12' to each side of the equation.
12 + -12 + -2y = 20 + -12

Combine like terms: 12 + -12 = 0
0 + -2y = 20 + -12
-2y = 20 + -12

Combine like terms: 20 + -12 = 8
-2y = 8

Divide each side by '-2'.
y = -4

Simplifying
y = -4

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