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(x+8.3)+x=725.7
We move all terms to the left:
(x+8.3)+x-(725.7)=0
We add all the numbers together, and all the variables
x+(x+8.3)-725.7=0
We get rid of parentheses
x+x+8.3-725.7=0
We add all the numbers together, and all the variables
2x-717.4=0
We move all terms containing x to the left, all other terms to the right
2x=717.4
x=717.4/2
x=358+1/1.42857142857
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