-3b-3+7b=9

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Solution for -3b-3+7b=9 equation: 


Simplifying
-3b + -3 + 7b = 9

Reorder the terms:
-3 + -3b + 7b = 9

Combine like terms: -3b + 7b = 4b
-3 + 4b = 9

Solving
-3 + 4b = 9

Solving for variable 'b'.

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

Add '3' to each side of the equation.
-3 + 3 + 4b = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 4b = 9 + 3
4b = 9 + 3

Combine like terms: 9 + 3 = 12
4b = 12

Divide each side by '4'.
b = 3

Simplifying
b = 3

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