-x+87=256

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Solution for -x+87=256 equation: 



-x+87=256

We move all terms to the left:

-x+87-(256)=0

We add all the numbers together, and all the variables

-1x-169=0

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

-x=169

x=169/-1

x=-169

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