21=21y

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Solution for 21=21y equation:


Simplifying
21 = 21y

Solving
21 = 21y

Solving for variable 'y'.

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

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

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

Add '-21' to each side of the equation.
21 + -21 + -21y = 0 + -21

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

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

Divide each side by '-21'.
y = 1

Simplifying
y = 1

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