7Mq3payz
Giới thiệu về bản thân
hong bít::))))))
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hong bít nữa hong có nhớ
con gà
hello
thời gian để xe máy đi đến b là
11 giờ -17 giờ 30 phút = 15 giờ
độ dài quãng đường ab là
40 *15=600 km
đáp số :600 km
3/4+5/4=2 3/7+8/6=37/21
35/25+7/25=42/25 2/3+3/4=17/12
9/4+3/5=57/20 2/5+4/7=34/35
3/5+4/3=29/15 3/12+1/4=1/2