Завдання 201 - 300 » 251

Знайди значення виразу: 1) 5/16 + 11/12 = (15 + 44)/48 = 59/48 = 111/48; 2) 5/21 + 5/28 = (20 + 15)/84 = 35/84 = 5/12; 3) 15/19 + 27/38 = (30+27)/38 = 57/38 = 3/2 = 11/2; 4) 9/16 + 19/24 = (27 + 38)/48 = 65/48 = 117/48; 5) 9/20 – 5/12 = (27 - 24)/60 = 3/60 = 1/20; 6) 7/18 – 1/45 = (35 - 2)/90 = 33/90 = 11/30; 7) 11/(42 ) – 5/28 = (22 - 15 )/84 = 7/84 = 1/12; 8) 13/60 – 7/40 = (26 - 21)/120 = 5/120 = 1/24.

Завдання 201 - 300