Multiple choice If 3z - 21 = 4z - 24, then the value of 3z + (z - 2) will be 14 10 8 4 None of the above Reveal answer Fill a bubble to check yourself B Correct answer Explanation 3z - 21 = 4z - 24 Or, z = 3 Or, 3 x 3 + ( 3 - 2 ) = 9 + 1 = 10