n+b=120

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Solution for n+b=120 equation: 


Simplifying
n + b = 120

Reorder the terms:
b + n = 120

Solving
b + n = 120

Solving for variable 'b'.

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

Add '-1n' to each side of the equation.
b + n + -1n = 120 + -1n

Combine like terms: n + -1n = 0
b + 0 = 120 + -1n
b = 120 + -1n

Simplifying
b = 120 + -1n

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