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0.3x+1.2x=1.23
We move all terms to the left:
0.3x+1.2x-(1.23)=0
We add all the numbers together, and all the variables
1.5x-1.23=0
We move all terms containing x to the left, all other terms to the right
1.5x=1.23
x=1.23/1.5
x=1/1.21951219512
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