Завдання 1201 - 1300 » 1247

Обчисліть: 1) –5 – 15 – (–28) – 14 = –5 – 15 + 28 – 14 = –6; 2) 2 – 29 – (–8) – 11 = 2 – 29 + 8 – 11 = –30; 3) 27,56 – 36 – 27,56 – (–12) = 27,56 – 36 – 27,56 + 12 = –24; 4) 39,126 – 12,1 + 18 – 21,026 = (39,126 – 21,026) + (–12,1 + 18) = 18,1 + 5,9 = 24; 5) –3 – (–21/5) – (–2/15) = –15/5 + 11/5 + 2/15 = –4/5 + 2/15 = (-12 + 2)/15 = –10/15 = –2/3; 6) 102/9 – (–41/9) – 37 – (–52/3) = (102/9 + 41/9 + 52/3) – 37 = (102/9 + 41/9 + 56/9) – 37 = 199/9 – 37 = 20 – 37 = –17.