bai 1:
a,2/3 + 3/4 - 5/6
b,65,42* 3,5:3434,55
c,[27,09+258,91] * 25,4
d,12/50 +8%+59/100+ 9%
e,17,6- 5,3+16,8-7,6+15,3-6,8
f,3,54* 73+0,46*25+3,54*26+0,46*75+3,54
g,1/2 + 5/6+11/12+19/20+29/30+41/42+55/56+71/72+89/90
Loga
Sinh Học lớp 12
