21-1 3/8÷(3/8+1 1/2)×3 2/11

Question

21-1 3/8÷(3/8+1 1/2)×3 2/11

Answer 1

Пошаговое объяснение:

21-1 3/8÷(3/8+1 1/2)×3 2/11

21-1 3/8÷1 7/8×3 2/11

21-11/15×3 2/11

21-2 1/3

18 2/3 ≈ 18,66...