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a/7=0.9
We move all terms to the left:
a/7-(0.9)=0
We add all the numbers together, and all the variables
a/7-0.9=0
We multiply all the terms by the denominator
a-(0.9)*7=0
We add all the numbers together, and all the variables
a-6.3=0
We move all terms containing a to the left, all other terms to the right
a=6.3
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