x+x-1+4+7+x+2+5+4=40

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Solution for x+x-1+4+7+x+2+5+4=40 equation: 



x+x-1+4+7+x+2+5+4=40

We move all terms to the left:

x+x-1+4+7+x+2+5+4-(40)=0

We add all the numbers together, and all the variables

3x-19=0

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

3x=19

x=19/3

x=6+1/3

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