Question

Simplify. (-3x - 2) - (7x + 9)

Answer 1

`10x+11`

Explanation:

`\left(-3x-2\right)-\left(7x+9\right)`

Apply rule:
`\left(a\right)=a`

`-3x-2-\left(7x+9\right)`

Factor out -1:-

`-\left(3x+2+\left(7x+9\right)\right)`

Apply rule:-
`a+\left(b+c\right)=a+b+c`

`2+\left(7x+9\right)=2+7x+9`

`=-\left(3x+2+7x+9\right)`

Group like terms:-

`3x+7x+2+9`

Add
`2+9=11`

`3x+7x+11`

Add similar elements:-

`10x+11`

OAmalOHopeO

Answer 2

look at the picture i sent..........