3b-4+3b-4+b=13

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Solution for 3b-4+3b-4+b=13 equation:


Simplifying
3b + -4 + 3b + -4 + b = 13

Reorder the terms:
-4 + -4 + 3b + 3b + b = 13

Combine like terms: -4 + -4 = -8
-8 + 3b + 3b + b = 13

Combine like terms: 3b + 3b = 6b
-8 + 6b + b = 13

Combine like terms: 6b + b = 7b
-8 + 7b = 13

Solving
-8 + 7b = 13

Solving for variable 'b'.

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

Add '8' to each side of the equation.
-8 + 8 + 7b = 13 + 8

Combine like terms: -8 + 8 = 0
0 + 7b = 13 + 8
7b = 13 + 8

Combine like terms: 13 + 8 = 21
7b = 21

Divide each side by '7'.
b = 3

Simplifying
b = 3

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