Завдання 201 - 300 » 279

Обчисли: 1) 4 – 25/9 = 39/9 – 25/9 = 14/9; 2) 8 – 37/8 = 78/8 – 37/8 = 41/8; 3) 73/4 – 5/12 = 7(9 - 5)/12 = 74/12 = 71/3; 4) 85/16 – 3/20 = 8(25 - 12)/80 = 813/80; 5) 94/5 – 53/10 = 4(8 - 3)/10 = 45/10 = 41/2; 6) 75/6 – 77/12 = (10 - 7)/12 = 3/12 = 1/4; 7) 88/15 – 59/20 = 3(32 - 27)/60 = 35/60 = 31/12; 8) 711/14 – 54/21 = 2(33 - 8)/42 = 225/42.