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0.7x+x+0.01x=300
We move all terms to the left:
0.7x+x+0.01x-(300)=0
We add all the numbers together, and all the variables
1.71x-300=0
We move all terms containing x to the left, all other terms to the right
1.71x=300
x=300/1.71
x=175+0.75/1.71
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