2b+9-5b=-12

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Solution for 2b+9-5b=-12 equation:


Simplifying
2b + 9 + -5b = -12

Reorder the terms:
9 + 2b + -5b = -12

Combine like terms: 2b + -5b = -3b
9 + -3b = -12

Solving
9 + -3b = -12

Solving for variable 'b'.

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

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

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

Combine like terms: -12 + -9 = -21
-3b = -21

Divide each side by '-3'.
b = 7

Simplifying
b = 7

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