a) ab +ac = a (b + c) = 11 × 8 = 88
b) 2a + 3b + 3c = 2 × 11 + 3(b+c) = 22 + 3 × 8 = 22 + 24 = 46
c) 10a + 9b + 9c = 10 × 11 + 9 × (b + c) = 110 + 9 × 8 = 110 + 72 = 182
d) ab + ac + 25 = a (b + c) + 25 = 11 × 8 + 25 = 88 + 25 = 113
e) ab + ac – 34 = a (b + c) – 34 = 11 × 8 –34 = 88– 34 = 54
f) 7b +7c + 9a = 7 (b + c) + 9 × 11 = 7 × 8 + 99 = 56 + 99 = 155
g) 11b + 11c - 6a = 11 (b + c) – 6× 11 = 11 × 8 - 66 = 88-66 = 22
h) 3a – 3b – 3c = 3a – 3(b + c) = 3× 11 - 3 × 8 = 33 - 24 = 9
i) 11b + a = 11b + 11c = 11 (b+c) = 11 × 8 = 88