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0.3x+x=1800
We move all terms to the left:
0.3x+x-(1800)=0
We add all the numbers together, and all the variables
1.3x-1800=0
We move all terms containing x to the left, all other terms to the right
1.3x=1800
x=1800/1.3
x=1384+0.8/1.3
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