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2x/5+4x/5=2x+21/30
We move all terms to the left:
2x/5+4x/5-(2x+21/30)=0
We add all the numbers together, and all the variables
2x/5+4x/5-(+2x+21/30)=0
We get rid of parentheses
2x/5+4x/5-2x-21/30=0
We calculate fractions
There is no solution for this equation
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