B+a=90

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Solution for B+a=90 equation: 


Simplifying
B + a = 90

Solving
B + a = 90

Solving for variable 'B'.

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

Add '-1a' to each side of the equation.
B + a + -1a = 90 + -1a

Combine like terms: a + -1a = 0
B + 0 = 90 + -1a
B = 90 + -1a

Simplifying
B = 90 + -1a

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