(90-x)+2x+x=189

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Solution for (90-x)+2x+x=189 equation: 



(90-x)+2x+x=189

We move all terms to the left:

(90-x)+2x+x-(189)=0

We add all the numbers together, and all the variables

(-1x+90)+2x+x-189=0

We add all the numbers together, and all the variables

3x+(-1x+90)-189=0

We get rid of parentheses

3x-1x+90-189=0

We add all the numbers together, and all the variables

2x-99=0

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

2x=99

x=99/2

x=49+1/2

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