Вычислите 1)-3/5-1/5 2) -1/3-2/3 3) -1/4-5/7 4)-5/6-1/3 5) -4 3/8-2 1/4

1)    -3/5 - 1/5 = (-3-1 )/5 = -4/5

2)   -1/3- 2/3 = (-1-2)/3 = -3/3 = -1

3)    -1/4 - 5/7 = -1*7/4*7 - 5*4/7*4 = -7/28 - 20/28 = (-7-20)/28 = -27/28

4)    -5/6 - 1/3 = -5/6 - 1*2/3*2 = -5/6 - 2/6 = (-5-2)/6 = -7/6 = 1 1/6 =

= 1 целая 1/6

5)   -4 3/8 -2 1/4 = -35/8 - 9/4 = -35/8 - 9*2/4*2 = -35/8 - 18/8 =

= (-35-18)/8 = -53/8 = 6 5/8

6)  -6 1/2 - 3 5/7 = - 13/2 - 26/7 = -13*7/2*7 - 26*2/7*2 = -91/14 - 52/14 =

=(-91-52)/14 = -143/14 = 10 3/14

7)  -3/7 - 4/7 = (-3-4)/7 = -7/7 = 1

8)   -1/8 - 1/3 = -1*3/8*3 - 1*8/3*8 = -3/24 - 8/24 = (-3-8)/24 = -11/24