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:

$12-6n$