Выполните действие з) -5/12 - (-7/12) и) -3 1/2- (-1 3/4) к) 2 2/3- 3 5/9

З) - 5/12 -(-7/12)=-5/12 +7/12 = 2/12 = 1/6
и) -3 1/2 - (-1 3/4 ) = -3 1/2 +1 3/4 = -3 2/4 + 1 3/4= -2 6/4 +1 3/4 = -1 3/4
к) 2 2/3 - 3 5/9 = 2 6/9-3 5/9 = 2 6/9 - 2 14/9= - 8/9