Combining like terms

-8 (5k+9)

show how you got the answer

5k + 17

Step-by-step explanation:

You can combine 9 and - 8. 9 is positive number and you keep it where it is, then open up the parentheses and move - 8 to the right but since you are moving it to the other side you have to change the sign so it would be 9 + 8 which equals 17. You can't combine 5k so you would get your answer.

(5k + 17)

You multiply the - 8 to the 5k and 9 and you will get - 40K-72K