Oblicz wartość podanego wyrażenia. Pamiętaj o kolejnośći wykonywania działań a) (3/4 - 1/2) * 3 = (3/4 - 2/4) * 3 = 1/4 * 3 = 3/4 b) (1/3 + 1/7) * 2 = (7/21 + 3/21 = 10/21 c) 3/16 * 3 + 1/8 * 3 = 9/16 + 3/8 = 9/16 + 6/16 = 15/16 d) 2/11 * 5 - 1/5 * 2 = 10/11 - 2/5 = 50/55 - 20/55 = 30/55 e) 7/9 - 1/4 * 3 = 7/9 - 3/4 = 28/36 - 27/36 = 1/36 Oblicz wartość podanego wyrażenia. Wynik przedstaw w najprostszej postaci a) (1/4 + 3/8) * 3 = (6/24 + 9/24) * 3 = 15/24 * 3 = 15/8 = 1 7/8 b) 2/15 * 7 - 1/3 = 14/15 - 5/15 = 9/15 = 3/5 c) (2/3 - 5/12) * 7 = (8/12 - 5/12) * 7 = 3/12 * 7 = 21/12 = 1 9/12 = 1 3/4 d) 5/6 * 7 - 3/8 *3 = 35/6 - 9/8 = 5 5/6 - 1 1/8 = 5 20/24 - 1 3/24 = 4 17/24
a).(3/4 - 1/2) · 3 = (3/4 - 2/4) · 3 = 1/4 · 3 = 3/4 b).(1/3 +1/7) · 2 = (7/21 +3/21) · 2 = 10/21 · 2 = 20/21 c).3/16 · 3 +1/8 · 3 = 9/16 +3/8 = 9/16 +6/16 = 15/16 d).2/11 · 5 - 1/5 · 2 = 10/11 - 2/5 = 50/55 - 22/55 = 28/55 e).7/9 - 1/4 · 3 = 7/9 - 3/4 = 28/36 - 27/36 = 1/36 a).(1/4 +3/8) · 3 = (2/8 +3/8) · 3 = 5/8 · 3 = 15/8 = 1 i 7/8 b).2/15 · 7 - 1/3 = 14/15 - 1/3 = 14/15 - 5/15 = 9/15 = 3/5 c).(2/3 - 5/12) · 7 = (8/12 - 5/12) · 7 = 3/12 · 7 = 1/4 · 7 = 7/4 = 1 i 3/4 d).5/6 · 7 - 3/8 · 3 = 35/6 - 9/8 = 140/24 - 27/24 = 113/24 = 4 i 17/24