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(2.1x+4.3)-(-3x-7)=5.1x-2.7
We move all terms to the left:
(2.1x+4.3)-(-3x-7)-(5.1x-2.7)=0
We get rid of parentheses
2.1x+3x-5.1x+4.3+7+2.7=0
We add all the numbers together, and all the variables
14!=0
There is no solution for this equation
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