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a/2.8=2.1
We move all terms to the left:
a/2.8-(2.1)=0
We add all the numbers together, and all the variables
a/2.8-2.1=0
We multiply all the terms by the denominator
a-(2.1)*2.8=0
We add all the numbers together, and all the variables
a-5.88=0
We move all terms containing a to the left, all other terms to the right
a=5.88
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