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0.06x+0.12(x+12.000)=1800
We move all terms to the left:
0.06x+0.12(x+12.000)-(1800)=0
We add all the numbers together, and all the variables
0.06x+0.12(x+12)-1800=0
We multiply parentheses
0.06x+0.12x+1.44-1800=0
We add all the numbers together, and all the variables
0.18x-1798.56=0
We move all terms containing x to the left, all other terms to the right
0.18x=1798.56
x=1798.56/0.18
x=9992
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