Question

(2ab+9a-4) - (ab+2)

Answer 1

`\boxed{\bold{ab+9a-6}}`

Explanation:

Remove parenthesis: (a) = a

`\bold{2ab+9a-4-\left(ab+2\right)}`

`\bold{-\left(ab+2\right): \ -ab-2}`

`\bold{2ab+9a-4-ab-2}`

Simplify
`\bold{2ab+9a-4-ab-2}`

`\bold{ab+9a-6}`

Regards,

Mordancy