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x+(x+0.03)+(x+0.86)=8.57
We move all terms to the left:
x+(x+0.03)+(x+0.86)-(8.57)=0
We add all the numbers together, and all the variables
x+(x+0.03)+(x+0.86)-8.57=0
We get rid of parentheses
x+x+x+0.03+0.86-8.57=0
We add all the numbers together, and all the variables
3x-7.68=0
We move all terms containing x to the left, all other terms to the right
3x=7.68
x=7.68/3
x=2+1/1.78571428571
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