2b-54+b-21=180

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Solution for 2b-54+b-21=180 equation:


Simplifying
2b + -54 + b + -21 = 180

Reorder the terms:
-54 + -21 + 2b + b = 180

Combine like terms: -54 + -21 = -75
-75 + 2b + b = 180

Combine like terms: 2b + b = 3b
-75 + 3b = 180

Solving
-75 + 3b = 180

Solving for variable 'b'.

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

Add '75' to each side of the equation.
-75 + 75 + 3b = 180 + 75

Combine like terms: -75 + 75 = 0
0 + 3b = 180 + 75
3b = 180 + 75

Combine like terms: 180 + 75 = 255
3b = 255

Divide each side by '3'.
b = 85

Simplifying
b = 85

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