Work out the combined operations below.a) 12 ÷ 3 × 4 + 10 – 6b) 27 ÷ 9 × 3 + 6 – 13c) 81 ÷ 9 × 2 + 10 – 8d) 72 ÷ 6 × 7 + 4 - 10