85=21x+1

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Solution for 85=21x+1 equation: 



85=21x+1

We move all terms to the left:

85-(21x+1)=0

We get rid of parentheses

-21x-1+85=0

We add all the numbers together, and all the variables

-21x+84=0

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

-21x=-84

x=-84/-21

x=+4

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