How do you simplify - 5 (m + 9) + 3m + 6 (3m - 15)

16m - 135

Step-by-step explanation:

-5 (m + 9) + 3m + 6 (3m - 15)

Distribute

-5m + - 5*9 + 3m + 6*3m - 6*15

-5m - 45 + 3m + 18m - 90

Combine like terms

-5m + 3m + 18m - 45-90

16m - 135

16m - 135

Step-by-step explanation:

Distribute the - 5 on - 5 (m+9) to make - 5m-45

Do the same with 6 (3m-15) to get 18m - 90

Then arrange the like terms together

-5m + 3m + 18m - 45 - 90

Add the ones with variables

-5m + 3m + 18m = 16m

Then the regular ones

(-45) + (-90) = - 135

And finally,

16m - 135