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6.4-9.3b=225.3-3.9b
We move all terms to the left:
6.4-9.3b-(225.3-3.9b)=0
We add all the numbers together, and all the variables
-9.3b-(-3.9b+225.3)+6.4=0
We get rid of parentheses
-9.3b+3.9b-225.3+6.4=0
We add all the numbers together, and all the variables
-5.4b-218.9=0
We move all terms containing b to the left, all other terms to the right
-5.4b=218.9
b=218.9/-5.4
b=-40+2.9/5.4
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