ax-b=y

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Solution for ax-b=y equation: 


Simplifying
ax + -1b = y

Solving
ax + -1b = y

Solving for variable 'a'.

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

Add 'b' to each side of the equation.
ax + -1b + b = b + y

Combine like terms: -1b + b = 0
ax + 0 = b + y
ax = b + y

Divide each side by 'x'.
a = bx-1 + x-1y

Simplifying
a = bx-1 + x-1y

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