Question

4 + 2[ 4n - 7(n - 1)] - 6

Answer 1

`4+2\left[4n-7\left(n-1\right)\right]-6`

first, we have to apply distributive property to the parenthesis:

`4+2\left[4n-7\left(n)-7(-1\right)\right]-6`
`4+2\left[4n-7n+7\right]-6`
`\text{.}`
`4+2\left[-3n+7\right]-6`

Next, solve the brackets:

`4+2(-3n)+2(7)-6`
`4-6n+14-6`

Add alike terms:

`12-6n`