(12+7.2b)-3(0.9b-4)=0

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Solution for (12+7.2b)-3(0.9b-4)=0 equation: 



(12+7.2b)-3(0.9b-4)=0

We add all the numbers together, and all the variables

(7.2b+12)-3(0.9b-4)=0

We multiply parentheses

(7.2b+12)-0b+12=0

We get rid of parentheses

7.2b-0b+12+12=0

We add all the numbers together, and all the variables

6.2b+24=0

We move all terms containing b to the left, all other terms to the right

6.2b=-24

b=-24/6.2

b=-3+3.8571428571429/4.4285714285714

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