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b/7-2/3=13/15
We move all terms to the left:
b/7-2/3-(13/15)=0
We add all the numbers together, and all the variables
b/7-2/3-(+13/15)=0
We get rid of parentheses
b/7-2/3-13/15=0
We calculate fractions
There is no solution for this equation
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