15=-b-4b

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Solution for 15=-b-4b equation:



15=-b-4b
We move all terms to the left:
15-(-b-4b)=0
We add all the numbers together, and all the variables
-(-5b)+15=0
We get rid of parentheses
5b+15=0
We move all terms containing b to the left, all other terms to the right
5b=-15
b=-15/5
b=-3

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