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0.1a+1.5=2
We move all terms to the left:
0.1a+1.5-(2)=0
We add all the numbers together, and all the variables
0.1a-0.5=0
We move all terms containing a to the left, all other terms to the right
0.1a=0.5
a=0.5/0.1
a=5
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