b+3b-1=19

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Solution for b+3b-1=19 equation: 


Simplifying
b + 3b + -1 = 19

Reorder the terms:
-1 + b + 3b = 19

Combine like terms: b + 3b = 4b
-1 + 4b = 19

Solving
-1 + 4b = 19

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + 4b = 19 + 1

Combine like terms: -1 + 1 = 0
0 + 4b = 19 + 1
4b = 19 + 1

Combine like terms: 19 + 1 = 20
4b = 20

Divide each side by '4'.
b = 5

Simplifying
b = 5

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