Aduh, aku ga ngerti guru ajarinya gimana, please bantu:D

A. 61/72
b. 6 1/17
c. 3 6/13

semoga bermafaat yaa ^^

A. 7 2/9 – 6 3/8 = (7-6) (2/9-3/8)
                      = 1 – 11/72
                      = 72/72 – 11/72
                      = 61/72
b. 9 - 2 16/17 = (8-2) (17/17-16/17)
                    = 6 1/17
c. 8 – 4 7/13 = (7-4) ( 13/13-7/13)
                  = 3 6/13