ax-bx=21

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Solution for ax-bx=21 equation:


Simplifying
ax + -1bx = 21

Solving
ax + -1bx = 21

Solving for variable 'a'.

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

Add 'bx' to each side of the equation.
ax + -1bx + bx = 21 + bx

Combine like terms: -1bx + bx = 0
ax + 0 = 21 + bx
ax = 21 + bx

Divide each side by 'x'.
a = 21x-1 + b

Simplifying
a = 21x-1 + b

Reorder the terms:
a = b + 21x-1

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