Question

Im stuck in this exercise ​

Answer 1

6m - 6

Explanation:

9m + 2 - (3m + 8) = 9m + 2 -3m -8

= 9m - 3m + 2 - 8

= 6m - 6

when you open the brackets, -(+3m) = -3m because when a positive sign times a negative sign, you get a negative sign. so, same thing for -(+8) = -8

Answer 2

`9m+2 \\ -(3m+8) \\ - - - - - \\ 6m - 6 \\ - - - - -`

Solution :-

`9m + 2 - (3m + 8) \\ 9m + 2 - 3m - 8 \\ m(9 - 3) + (2 - 8) \\ 6m - 6`