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7.5-3b=-4.5-3.6
We move all terms to the left:
7.5-3b-(-4.5-3.6)=0
We add all the numbers together, and all the variables
-3b+7.5-(-8.1)=0
We add all the numbers together, and all the variables
-3b+15.6=0
We move all terms containing b to the left, all other terms to the right
-3b=-15.6
b=-15.6/-3
b=5+0.6/3
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