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-5(-2x-5)-2x-2=15

We move all terms to the left:

-5(-2x-5)-2x-2-(15)=0

We add all the numbers together, and all the variables

-2x-5(-2x-5)-17=0

We multiply parentheses

-2x+10x+25-17=0

We add all the numbers together, and all the variables

8x+8=0

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

8x=-8

x=-8/8

x=-1

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