3b-8=13

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Solution for 3b-8=13 equation: 


Simplifying
3b + -8 = 13

Reorder the terms:
-8 + 3b = 13

Solving
-8 + 3b = 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 + 3b = 13 + 8

Combine like terms: -8 + 8 = 0
0 + 3b = 13 + 8
3b = 13 + 8

Combine like terms: 13 + 8 = 21
3b = 21

Divide each side by '3'.
b = 7

Simplifying
b = 7

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