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-3.1(b+-5)=9.3
We move all terms to the left:
-3.1(b+-5)-(9.3)=0
We add all the numbers together, and all the variables
-3.1(b-5)-(9.3)=0
We add all the numbers together, and all the variables
-3.1(b-5)-9.3=0
We multiply parentheses
-3.1b+15.5-9.3=0
We add all the numbers together, and all the variables
-3.1b+6.2=0
We move all terms containing b to the left, all other terms to the right
-3.1b=-6.2
b=-6.2/-3.1
b=+2
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