Завдання 201 - 300 » 245

Знайди значення виразу: 1) 1/2 + 1/4 = (2 + 1)/4 =3/4 ; 2) 1/3 + 1/6 = (2 + 1)/6 = 3/6 = 1/2; 3) 1/5 + 1/6 = (6 + 5)/30 = 11/30; 4) 1/8 + 1/4 = (1 + 2)/8 = (3 )/8; 5) 1 – 1/3 = 3/3 – 1/3 = 2/3; 6) 1 – 2/7 = 7/7 – 2/7 = 5/7; 7) 1/2 – 1/7 = (7 - 2)/14 = (5 )/14; 8) 1/4 – 1/16 = (4 - 1)/16 = 3/16.