(x-10)+x=100

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Solution for (x-10)+x=100 equation: 



(x-10)+x=100

We move all terms to the left:

(x-10)+x-(100)=0

We add all the numbers together, and all the variables

x+(x-10)-100=0

We get rid of parentheses

x+x-10-100=0

We add all the numbers together, and all the variables

2x-110=0

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

2x=110

x=110/2

x=55

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