-4(72-5b)=-12b

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Solution for -4(72-5b)=-12b equation: 



-4(72-5b)=-12b

We move all terms to the left:

-4(72-5b)-(-12b)=0

We add all the numbers together, and all the variables

-4(-5b+72)-(-12b)=0

We multiply parentheses

20b-(-12b)-288=0

We get rid of parentheses

20b+12b-288=0

We add all the numbers together, and all the variables

32b-288=0

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

32b=288

b=288/32

b=9

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