b-31=90

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Solution for b-31=90 equation: 


Simplifying
b + -31 = 90

Reorder the terms:
-31 + b = 90

Solving
-31 + b = 90

Solving for variable 'b'.

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

Add '31' to each side of the equation.
-31 + 31 + b = 90 + 31

Combine like terms: -31 + 31 = 0
0 + b = 90 + 31
b = 90 + 31

Combine like terms: 90 + 31 = 121
b = 121

Simplifying
b = 121

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