Question

Обчислити різницю чисел а)26-(-5); б)-4+(-18); в)14-(-18); г)-5/12-(-7/12) Д)-3 1/2-(1 3/4) е)2 2/3-9 5/9

Answer 1

Ответ:

а) 26-(-5)=31

б)-4+(-18)=-22

в)14-(-18)=32

г)5/12-(-7/12)=12/12=1

д)3 1/2-(1 3/4)=3 2/4-(1 3/4)=14/4-7/4=7/4=1 3/4

е)2 2/3-9 5/9=8/3-86/9=24/9-86/9=-62/9=6 8/9

Answer 2

Ответ:

а) 26+5=31. б)-4-18=-22. в)14+18=32. г) -5/12+7/12= 2/12. д) -3 1/2 - 1 3/4 = - 7/2-7/4= (-14-7)/4 = -11/4=-2 3/4. е) 8/3- 86/9 = (24-86)/9 = -62/9= -6 8/9

Answer 3

а) 26 - (-5) = 26 + 5 = 31 б) -4 + (-18) = -4 - 18 = -22 в) 14 - (-18) = 14 + 18 = 32 г) -5/12 - (-7/12) = -5/12 + 7/12 = 2/12 = 1/6 д) -3 1/2 - (1 3/4) = -7/2 - 7/4 = -14/4 - 7/4 = -21/4 е) 2 2/3 - 9 5/9 = (23 + 2)/3 - (99 + 5)/9 = (6 + 2)/3 - (81 + 5)/9 = 8/3 - 86/9 = (8*3 - 86)/9 = (24 - 86)/9 = -62/9