75=x+20

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Solution for 75=x+20 equation: 



75=x+20

We move all terms to the left:

75-(x+20)=0

We get rid of parentheses

-x-20+75=0

We add all the numbers together, and all the variables

-1x+55=0

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

-x=-55

x=-55/-1

x=+55

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