2x+x=7.8

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Solution for 2x+x=7.8 equation: 



2x+x=7.8

We move all terms to the left:

2x+x-(7.8)=0

We add all the numbers together, and all the variables

3x-7.8=0

We move all terms containing x to the left, all other terms to the right

3x=7.8

x=7.8/3

x=2+1/1.6666666666667

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