77:77=1
7:7+7:7=2
(7+7+7):7=3
77:7-7=11-7=4
7 - (7 + 7): 7 = 5;
(7 • 7 - 7): 7 - 6;
7 + (7 - 7) - 7 = 7.
77:77=1
7:7+7:7=2
(7+7+7):7=3
77:7-7=11-7=4
7 - (7 + 7): 7 = 5;
(7 • 7 - 7): 7 - 6;
7 + (7 - 7) - 7 = 7.
(7:7)+(7:7)=2
(7+7+7):7=3