19.8+3a=12

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Solution for 19.8+3a=12 equation: 



19.8+3a=12

We move all terms to the left:

19.8+3a-(12)=0

We add all the numbers together, and all the variables

3a+7.8=0

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

3a=-7.8

a=-7.8/3

a=-2+1/1.6666666666667

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