7-b=12.3

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Solution for 7-b=12.3 equation: 



7-b=12.3

We move all terms to the left:

7-b-(12.3)=0

We add all the numbers together, and all the variables

-1b-5.3=0

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

-b=5.3

b=5.3/-1

b=-5+0.3/1

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