b-42=84

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Solution for b-42=84 equation: 


Simplifying
b + -42 = 84

Reorder the terms:
-42 + b = 84

Solving
-42 + b = 84

Solving for variable 'b'.

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

Add '42' to each side of the equation.
-42 + 42 + b = 84 + 42

Combine like terms: -42 + 42 = 0
0 + b = 84 + 42
b = 84 + 42

Combine like terms: 84 + 42 = 126
b = 126

Simplifying
b = 126

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