87=7-5x

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Solution for 87=7-5x equation: 



87=7-5x

We move all terms to the left:

87-(7-5x)=0

We add all the numbers together, and all the variables

-(-5x+7)+87=0

We get rid of parentheses

5x-7+87=0

We add all the numbers together, and all the variables

5x+80=0

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

5x=-80

x=-80/5

x=-16

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