Answer:
-20x-18 or -2(10x+9)
Explanation:
distribute the negative sign to the second set of parenthesis:
(-10x-8)-5x-2-10x+7. I'm assuming that the 2 is being multiplied to 5
add like terms:
-10x-10x-8-5x2. multiply 5 and 2, add like terms:
-20x-8-10
-20x-18
you can factor out a -2 if necessary:
-2(10x+9)