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3x+2x+0.40=12.10
We move all terms to the left:
3x+2x+0.40-(12.10)=0
We add all the numbers together, and all the variables
3x+2x+0.40-(12.1)=0
We add all the numbers together, and all the variables
5x-11.7=0
We move all terms containing x to the left, all other terms to the right
5x=11.7
x=11.7/5
x=2+1/2.9411764705882
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