3b+8=20

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Solution for 3b+8=20 equation: 


Simplifying
3b + 8 = 20

Reorder the terms:
8 + 3b = 20

Solving
8 + 3b = 20

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 = 20 + -8

Combine like terms: 8 + -8 = 0
0 + 3b = 20 + -8
3b = 20 + -8

Combine like terms: 20 + -8 = 12
3b = 12

Divide each side by '3'.
b = 4

Simplifying
b = 4

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