ay+21=x

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Solution for ay+21=x equation: 


Simplifying
ay + 21 = x

Reorder the terms:
21 + ay = x

Solving
21 + ay = x

Solving for variable 'a'.

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

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

Combine like terms: 21 + -21 = 0
0 + ay = -21 + x
ay = -21 + x

Divide each side by 'y'.
a = -21y-1 + xy-1

Simplifying
a = -21y-1 + xy-1

Reorder the terms:
a = xy-1 + -21y-1

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