3b+b-5=15

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Solution for 3b+b-5=15 equation: 


Simplifying
3b + b + -5 = 15

Reorder the terms:
-5 + 3b + b = 15

Combine like terms: 3b + b = 4b
-5 + 4b = 15

Solving
-5 + 4b = 15

Solving for variable 'b'.

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

Add '5' to each side of the equation.
-5 + 5 + 4b = 15 + 5

Combine like terms: -5 + 5 = 0
0 + 4b = 15 + 5
4b = 15 + 5

Combine like terms: 15 + 5 = 20
4b = 20

Divide each side by '4'.
b = 5

Simplifying
b = 5

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