821=71+x

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Solution for 821=71+x equation: 



821=71+x

We move all terms to the left:

821-(71+x)=0

We add all the numbers together, and all the variables

-(x+71)+821=0

We get rid of parentheses

-x-71+821=0

We add all the numbers together, and all the variables

-1x+750=0

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

-x=-750

x=-750/-1

x=+750

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