Question

Выполните вычитание :

1) 78 - ( -310) ; 4) -59 - (-34);

2) 1112 - 1718; 5) 3 11/12 - ( -4. 49);

3) -37 - 914 ; 6) 4. 517 - 6 .

Answer 1

1) 78 - ( -310) ;  7/8+3/10 = 35/40+12/40 = 47/40 = 1 7/40

4) -59 - (-34);  -5/9 + 3/4 = -20/36 + 27/36 = 7/36

2) 1112 - 1718 = 33/36 - 34/36 = - 1/36

5) 3 11/12 - ( -4. 49);  3 11/12 + 4 4/9 =  3 33/36  + 4 16/36 = 7 49/36 = 8 13/36

3) -37 - 914  = -6/14 - 9/14 = -15/14 = - 1 1/14

 6) 4  517 - 6  = 4 5/17 - 5 17/17 = -1 12/17