(17-x)+(28-x)+x=30

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Solution for (17-x)+(28-x)+x=30 equation: 



(17-x)+(28-x)+x=30

We move all terms to the left:

(17-x)+(28-x)+x-(30)=0

We add all the numbers together, and all the variables

(-1x+17)+(-1x+28)+x-30=0

We add all the numbers together, and all the variables

x+(-1x+17)+(-1x+28)-30=0

We get rid of parentheses

x-1x-1x+17+28-30=0

We add all the numbers together, and all the variables

-1x+15=0

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

-x=-15

x=-15/-1

x=+15

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