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0=2.1.5+b
We move all terms to the left:
0-(2.1.5+b)=0
We add all the numbers together, and all the variables
-(b+1.05)+0=0
We add all the numbers together, and all the variables
-(b+1.05)=0
We get rid of parentheses
-b-1.05=0
We add all the numbers together, and all the variables
-1b-1.05=0
We move all terms containing b to the left, all other terms to the right
-b=1.05
b=1.05/-1
b=-1+0.05/1
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