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21x-6-16x+3=21x-5-16x+13
We move all terms to the left:
21x-6-16x+3-(21x-5-16x+13)=0
We add all the numbers together, and all the variables
21x-16x-(5x+8)-6+3=0
We add all the numbers together, and all the variables
5x-(5x+8)-3=0
We get rid of parentheses
5x-5x-8-3=0
We add all the numbers together, and all the variables
-11!=0
There is no solution for this equation
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