20=8+y

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Solution for 20=8+y equation:


Simplifying
20 = 8 + y

Solving
20 = 8 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
20 + -1y = 8 + y + -1y

Combine like terms: y + -1y = 0
20 + -1y = 8 + 0
20 + -1y = 8

Add '-20' to each side of the equation.
20 + -20 + -1y = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -1y = 8 + -20
-1y = 8 + -20

Combine like terms: 8 + -20 = -12
-1y = -12

Divide each side by '-1'.
y = 12

Simplifying
y = 12

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