3a-7=2A+2.8

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Solution for 3a-7=2A+2.8 equation: 



3a-7=2+2.8

We move all terms to the left:

3a-7-(2+2.8)=0

We add all the numbers together, and all the variables

3a-7-(4.8)=0

We add all the numbers together, and all the variables

3a-11.8=0

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

3a=11.8

a=11.8/3

a=3+2.8/3

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