Answer :
7x - 2[2 - (6 - 3x)]
7x - 2[(2 - 6) - 3x
7x - 2[-3 - 3x]
7x - 2(-3) + 2(3x)
7x + 6 + 6x
7x + 6x + 6
13x + 6
7x - 2[(2 - 6) - 3x
7x - 2[-3 - 3x]
7x - 2(-3) + 2(3x)
7x + 6 + 6x
7x + 6x + 6
13x + 6