a+br=x

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Solution for a+br=x equation: 


Simplifying
a + br = x

Solving
a + br = x

Solving for variable 'a'.

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

Add '-1br' to each side of the equation.
a + br + -1br = -1br + x

Combine like terms: br + -1br = 0
a + 0 = -1br + x
a = -1br + x

Simplifying
a = -1br + x

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