xa+b=3

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Solution for xa+b=3 equation: 


Simplifying
xa + b = 3

Solving
ax + b = 3

Solving for variable 'a'.

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

Add '-1b' to each side of the equation.
ax + b + -1b = 3 + -1b

Combine like terms: b + -1b = 0
ax + 0 = 3 + -1b
ax = 3 + -1b

Divide each side by 'x'.
a = 3x-1 + -1bx-1

Simplifying
a = 3x-1 + -1bx-1

Reorder the terms:
a = -1bx-1 + 3x-1

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