(x-100)+(x*2)=900

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Solution for (x-100)+(x*2)=900 equation: 



(x-100)+(x*2)=900

We move all terms to the left:

(x-100)+(x*2)-(900)=0

We add all the numbers together, and all the variables

(x-100)+(+x*2)-900=0

We get rid of parentheses

x+x*2-100-900=0

We add all the numbers together, and all the variables

x+x*2-1000=0

Wy multiply elements

x+2x-1000=0

We add all the numbers together, and all the variables

3x-1000=0

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

3x=1000

x=1000/3

x=333+1/3

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