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21(2-2/9)+12(-2/9)=x
We move all terms to the left:
21(2-2/9)+12(-2/9)-(x)=0
We add all the numbers together, and all the variables
-x+21(-2/9+2)+12(-2/9)=0
We add all the numbers together, and all the variables
-1x+21(-2/9+2)+12(-2/9)=0
We multiply parentheses
-1x+42-2/9*21-2/9*12=0
We calculate fractions
There is no solution for this equation
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