Question

a) Add ( 3X + 11 + 9Z ) and ( 6X – 5 – Z )

Answer 1

$\huge\underline{\green{Answer}}$

$(3x + 11 + 9z) \: and \: (6x - 5 - z) \\ = (3x + 11 + 9z) + (6x - 5 - z) \\ = 3x + 11 + 9z + 6x - 5 - z \\ = 9x + 8z + 6$

Hence the correct answer is 9x + 8z + 6