5+3b+1=21

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Solution for 5+3b+1=21 equation: 


Simplifying
5 + 3b + 1 = 21

Reorder the terms:
5 + 1 + 3b = 21

Combine like terms: 5 + 1 = 6
6 + 3b = 21

Solving
6 + 3b = 21

Solving for variable 'b'.

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

Add '-6' to each side of the equation.
6 + -6 + 3b = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 3b = 21 + -6
3b = 21 + -6

Combine like terms: 21 + -6 = 15
3b = 15

Divide each side by '3'.
b = 5

Simplifying
b = 5

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