2*x+x=100

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Solution for 2*x+x=100 equation: 



2x+x=100

We move all terms to the left:

2x+x-(100)=0

We add all the numbers together, and all the variables

3x-100=0

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

3x=100

x=100/3

x=33+1/3

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