b+81=10b+72

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Solution for b+81=10b+72 equation:


Simplifying
b + 81 = 10b + 72

Reorder the terms:
81 + b = 10b + 72

Reorder the terms:
81 + b = 72 + 10b

Solving
81 + b = 72 + 10b

Solving for variable 'b'.

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

Add '-10b' to each side of the equation.
81 + b + -10b = 72 + 10b + -10b

Combine like terms: b + -10b = -9b
81 + -9b = 72 + 10b + -10b

Combine like terms: 10b + -10b = 0
81 + -9b = 72 + 0
81 + -9b = 72

Add '-81' to each side of the equation.
81 + -81 + -9b = 72 + -81

Combine like terms: 81 + -81 = 0
0 + -9b = 72 + -81
-9b = 72 + -81

Combine like terms: 72 + -81 = -9
-9b = -9

Divide each side by '-9'.
b = 1

Simplifying
b = 1

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