11=y-21

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Solution for 11=y-21 equation:


Simplifying
11 = y + -21

Reorder the terms:
11 = -21 + y

Solving
11 = -21 + 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.
11 + -1y = -21 + y + -1y

Combine like terms: y + -1y = 0
11 + -1y = -21 + 0
11 + -1y = -21

Add '-11' to each side of the equation.
11 + -11 + -1y = -21 + -11

Combine like terms: 11 + -11 = 0
0 + -1y = -21 + -11
-1y = -21 + -11

Combine like terms: -21 + -11 = -32
-1y = -32

Divide each side by '-1'.
y = 32

Simplifying
y = 32

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