9(b-90)=81

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Solution for 9(b-90)=81 equation:


Simplifying
9(b + -90) = 81

Reorder the terms:
9(-90 + b) = 81
(-90 * 9 + b * 9) = 81
(-810 + 9b) = 81

Solving
-810 + 9b = 81

Solving for variable 'b'.

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

Add '810' to each side of the equation.
-810 + 810 + 9b = 81 + 810

Combine like terms: -810 + 810 = 0
0 + 9b = 81 + 810
9b = 81 + 810

Combine like terms: 81 + 810 = 891
9b = 891

Divide each side by '9'.
b = 99

Simplifying
b = 99

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