4!
26+26+30=82 mean= 82 / 3 therefore mean=27.333333
3 + 6 + m + 12 + 5 = 30 9 + m + 17 = 30 m + 26 = 30 m = 30 - 26 = 4
310 + 26 = 336 3/10 + 2/6 = 9/30 + 10/30 = 19/30
the answer is 30
15x26=390
9/30 + -26/30 = -17/30
228
-26
26 + 4 = 30
40+30+20+80=170
1/6 + 7/10 = 5/30 + 21/30 = 26/30 = 13/15