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x+(x*21/100)=29040
We move all terms to the left:
x+(x*21/100)-(29040)=0
We add all the numbers together, and all the variables
x+(+x*21/100)-29040=0
We get rid of parentheses
x+x*21/100-29040=0
We multiply all the terms by the denominator
x*100+x*21-29040*100=0
We add all the numbers together, and all the variables
x*100+x*21-2904000=0
Wy multiply elements
100x+21x-2904000=0
We add all the numbers together, and all the variables
121x-2904000=0
We move all terms containing x to the left, all other terms to the right
121x=2904000
x=2904000/121
x=24000
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