3x + 27 = 3 * x + 3 * 9 = 3(x + 9)
14 + 16y - 7 - y = (14 - 7) + (16y - y) = 7 + 15y = 15y + 7
Answer:
a) 3 * x + 3 * 9 and 3(x + 9)
b) 15y + 7
