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4=-2.17+b
We move all terms to the left:
4-(-2.17+b)=0
We add all the numbers together, and all the variables
-(b-2.17)+4=0
We get rid of parentheses
-b+2.17+4=0
We add all the numbers together, and all the variables
-1b+6.17=0
We move all terms containing b to the left, all other terms to the right
-b=-6.17
b=-6.17/-1
b=6+0.17/1
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