11/70. Calculați:
a) (4/9 ÷ 2/3 + 4⅔) × 9/40; b) (4/5 - 8/15 ÷ 4/3) ×1/⅞; c) 14/15 × (1¾ + 27/8 ÷ 9/2); d) (7/6 + 3/4 × 1⅝) ÷ 28/15; 2⅙ - 15/14 × 6/5) ÷ 18/35; f) 1-11/15 : 11/9 + 7/6 × 2⅔).




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