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4.49-3.2b=-5.9b-5.7b-19.87
We move all terms to the left:
4.49-3.2b-(-5.9b-5.7b-19.87)=0
We add all the numbers together, and all the variables
-3.2b-(-11.6b-19.87)+4.49=0
We get rid of parentheses
-3.2b+11.6b+19.87+4.49=0
We add all the numbers together, and all the variables
8.4b+24.36=0
We move all terms containing b to the left, all other terms to the right
8.4b=-24.36
b=-24.36/8.4
b=-2+4.8461538461538/5.3846153846154
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