9
0/15+11/15)*2=21/15*2=7/5*2=14/5
208
16
41 + 26 = 67
72 + 44 = 116
29 + 32 = 61
34 + 24 = 58
12−x=1012−x=10
x=12−10⇒x=12−10
x=2⇒x=2
Vậy x=2
2
4
6