-8.4b-4.2=12.6

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Solution for -8.4b-4.2=12.6 equation: 



-8.4b-4.2=12.6

We move all terms to the left:

-8.4b-4.2-(12.6)=0

We add all the numbers together, and all the variables

-8.4b-16.8=0

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

-8.4b=16.8

b=16.8/-8.4

b=-2

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