3b-12=-9

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Solution for 3b-12=-9 equation: 


Simplifying
3b + -12 = -9

Reorder the terms:
-12 + 3b = -9

Solving
-12 + 3b = -9

Solving for variable 'b'.

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

Add '12' to each side of the equation.
-12 + 12 + 3b = -9 + 12

Combine like terms: -12 + 12 = 0
0 + 3b = -9 + 12
3b = -9 + 12

Combine like terms: -9 + 12 = 3
3b = 3

Divide each side by '3'.
b = 1

Simplifying
b = 1

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