Найдите значение выражения 1) (11/18×2/7) ×1 7/11

2) (3/8×9/11) ×1 2/9

3) 3 2/3×(3/4×3/8) ×1 1/3

4) 0,6×(2, 1×1 2/3)

5) (5, 7×2, 5) ×2/5

6) 3,1 (7/15×10/31) × 2 1/7

7) 2 2/7 (5, 1×7/16)

8) 5 1/3×(7/16×3/16)

9) 0,4× (1/9 × 2 1/2×9)
Даю 40 балов помогите пжж
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