69=9b-12

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Solution for 69=9b-12 equation:


Simplifying
69 = 9b + -12

Reorder the terms:
69 = -12 + 9b

Solving
69 = -12 + 9b

Solving for variable 'b'.

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

Add '-9b' to each side of the equation.
69 + -9b = -12 + 9b + -9b

Combine like terms: 9b + -9b = 0
69 + -9b = -12 + 0
69 + -9b = -12

Add '-69' to each side of the equation.
69 + -69 + -9b = -12 + -69

Combine like terms: 69 + -69 = 0
0 + -9b = -12 + -69
-9b = -12 + -69

Combine like terms: -12 + -69 = -81
-9b = -81

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

Simplifying
b = 9

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