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10x=3.90
We move all terms to the left:
10x-(3.90)=0
We add all the numbers together, and all the variables
10x-(3.9)=0
We add all the numbers together, and all the variables
10x-3.9=0
We move all terms containing x to the left, all other terms to the right
10x=3.9
x=3.9/10
x=2.0526315789474/5.2631578947368
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