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.21x+57.82=57
We move all terms to the left:
.21x+57.82-(57)=0
We add all the numbers together, and all the variables
.21x+0.82=0
We move all terms containing x to the left, all other terms to the right
.21x=-0.82
x=-0.82/.21
x=-3+0.19/.21
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