b+b+5+3b=-15

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


Simplifying
b + b + 5 + 3b = -15

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

Combine like terms: b + b = 2b
5 + 2b + 3b = -15

Combine like terms: 2b + 3b = 5b
5 + 5b = -15

Solving
5 + 5b = -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 + 5b = -15 + -5

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

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

Divide each side by '5'.
b = -4

Simplifying
b = -4

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