Question

Найдите значение суммы : -2 + 1 7/8 , -4 + 3 1/2 , -5/8 + 7/8 , 5/12 - 1/12, 5/16 - 1/6

Answer 1

-2+1 78=-18
-4+3 12=-12
-58+78=28=14
512-112=412=13
516-16= 5*348-1*848=1548-848=748

Answer 2

-2 + 1 7/8=-1 8/8+1 7/8=-1/8
-4 + 3 1/2=-3 2/2+3 1/2=-1/2
-5/8 + 7/8=2/8=1/4
5/12 - 1/12=4/12=1/3
5/16 - 1/6=15/48-8/48=7/48