X+21*x/100=9.72

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Solution for X+21*x/100=9.72 equation: 



X+21X/100=9.72

We move all terms to the left:

X+21X/100-(9.72)=0

We add all the numbers together, and all the variables

X+21X/100-9.72=0

We multiply all the terms by the denominator


X*100+21X-(9.72)*100=0

We add all the numbers together, and all the variables

21X+X*100-972=0

Wy multiply elements

21X+100X-972=0

We add all the numbers together, and all the variables

121X-972=0

We move all terms containing X to the left, all other terms to the right

121X=972

X=972/121

X=8+4/121

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