87=x+3

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Solution for 87=x+3 equation: 



87=x+3

We move all terms to the left:

87-(x+3)=0

We get rid of parentheses

-x-3+87=0

We add all the numbers together, and all the variables

-1x+84=0

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

-x=-84

x=-84/-1

x=+84

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