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12+0.18x=30+0.14x
We move all terms to the left:
12+0.18x-(30+0.14x)=0
We add all the numbers together, and all the variables
0.18x-(0.14x+30)+12=0
We get rid of parentheses
0.18x-0.14x-30+12=0
We add all the numbers together, and all the variables
0.04x-18=0
We move all terms containing x to the left, all other terms to the right
0.04x=18
x=18/0.04
x=450
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