87=-7x-3x-3

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Solution for 87=-7x-3x-3 equation: 



87=-7x-3x-3

We move all terms to the left:

87-(-7x-3x-3)=0

We add all the numbers together, and all the variables

-(-10x-3)+87=0

We get rid of parentheses

10x+3+87=0

We add all the numbers together, and all the variables

10x+90=0

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

10x=-90

x=-90/10

x=-9

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