15=11-b

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Solution for 15=11-b equation:



15=11-b
We move all terms to the left:
15-(11-b)=0
We add all the numbers together, and all the variables
-(-1b+11)+15=0
We get rid of parentheses
1b-11+15=0
We add all the numbers together, and all the variables
b+4=0
We move all terms containing b to the left, all other terms to the right
b=-4

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