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6.50+5a=(6.5+15.5)
We move all terms to the left:
6.50+5a-((6.5+15.5))=0
We add all the numbers together, and all the variables
5a+6.50-(22)=0
We add all the numbers together, and all the variables
5a-15.5=0
We move all terms containing a to the left, all other terms to the right
5a=15.5
a=15.5/5
a=3+0.5/5
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