7,3a+12,4=3,1a+39,7

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Solution for 7,3a+12,4=3,1a+39,7 equation: 



7.3a+12.4=3.1a+39.7

We move all terms to the left:

7.3a+12.4-(3.1a+39.7)=0

We get rid of parentheses

7.3a-3.1a-39.7+12.4=0

We add all the numbers together, and all the variables

4.2a-27.3=0

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

4.2a=27.3

a=27.3/4.2

a=6+1/2

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