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x+.06+x+0.12+x=5.19
We move all terms to the left:
x+.06+x+0.12+x-(5.19)=0
We add all the numbers together, and all the variables
3x-5.01=0
We move all terms containing x to the left, all other terms to the right
3x=5.01
x=5.01/3
x=1+2.01/3
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