a) -22/55 = -2/5 ; -26/65 = -2/5
=> -22/55 = -26/65 (= -2/5)
b) 114/122 = 57/61 ; 5757/6161 = 57/61
=> 114/122 = 5757/6161 (=57/61)
a) Ta có : -22/55 = -2/5
-26/65 = -2/5
=> -22/55 = -26/65
b) Ta có : 114/122 = 57/61
5757/6161 = 57/61
=> 114/122 = 5757/6161
Hok tốt !