h, 13,23 + 13,45 + 13,32
i,47,49 +47,53-47,2
j,37,12+37,87+37
k,48,23+48,78-48
I,25,5*4,27*2
m,28,64+28,36
n,87,36+87,64
o,20+21+22+......+29+30
Loga
Sinh Học lớp 12
