3b+4b-2=12

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Solution for 3b+4b-2=12 equation: 


Simplifying
3b + 4b + -2 = 12

Reorder the terms:
-2 + 3b + 4b = 12

Combine like terms: 3b + 4b = 7b
-2 + 7b = 12

Solving
-2 + 7b = 12

Solving for variable 'b'.

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

Add '2' to each side of the equation.
-2 + 2 + 7b = 12 + 2

Combine like terms: -2 + 2 = 0
0 + 7b = 12 + 2
7b = 12 + 2

Combine like terms: 12 + 2 = 14
7b = 14

Divide each side by '7'.
b = 2

Simplifying
b = 2

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