ok thêm câu nữa nha vẫn là tính
4/6+18/27
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NA
3
HK
2
T
20 tháng 3 2023
1.\(\dfrac{11}{18};\dfrac{7}{9};\dfrac{14}{15}\)
2.\(\dfrac{4}{9}+\dfrac{3}{7}=\dfrac{28}{63}+\dfrac{27}{63}=\dfrac{55}{63}\)
\(\dfrac{5}{6}-\dfrac{3}{8}=\dfrac{20}{24}-\dfrac{9}{24}=\dfrac{11}{24}\)
\(\dfrac{18}{25}\cdot\dfrac{15}{6}=\dfrac{18\cdot15}{25\cdot6}=\dfrac{270}{150}=\dfrac{9}{5}\)
\(\dfrac{30}{49}:\dfrac{6}{7}=\dfrac{30}{49}\cdot\dfrac{7}{6}=\dfrac{30\cdot7}{49\cdot6}=\dfrac{210}{294}=\dfrac{5}{7}\)
20 tháng 3 2023
2:
a: =28/63+27/63=55/63
b: =20/24-9/24=11/24
c: =270/150=9/5
d: \(=\dfrac{30}{49}\cdot\dfrac{7}{6}=\dfrac{1}{7}\cdot5=\dfrac{5}{7}\)
R
2
25 tháng 7 2016
At twenty-five past nine, the bell rings and all the students do into the yard. It is time for recess. They are all happy and excited. They meet their friends and have some fun. Many are talking about the last class, or last night's movie. Som are eating and drinking as well as chatting. Some students are playing gameslike blindman's bluff or catch. Some boys are playing marbles and some girls are skipping rope. But the most popular activity is talking. The yard is very noisy until the bell rings. Then everyone goes indoors and classes begin again.
Yeserday, my school is very fun. Many students met their friends. It's so cool. I'm played basketbaal. I love it. It's very graet. and I love my school so much.
25 tháng 7 2016
The class teacher is intently listening to a lecture. In addition to the school grounds only hear a whisper of wind blowing and the birds chirping. When the teacher had just finished his homily, three drum signaling recess pounding sounded brittle. we stood up to greet her and then rushed out of the quiet lop.San is that suddenly noisy, more animated. Voices and laughter, the sound of clogs sandals mixed with leaves rustling sound. From above looking down, the pitch of the prominent white shirts and red uniforms of red scarves on their shoulders fly wavering members of your team. On school grounds, organizing many games you are happy, what is dragging, shooting marbles, cat and mouse ... Between the schoolyard, Hung and win real or play shuttlecock. Hung he lifted up demand. Green Globe spinning, spiraling flight, landing leg win. Stone bridge up and putting back the Hung. Globe soar, descend like dancing on the two legs of your ingenuity. Suddenly Thoan fast, powerful rock Hung Thang sphere through people do not support Win up. Hung shouted "Ha ha, win it." Lan Group's real quick when choosing a shade under the banyan tree to play jump rope. Through each round, of course, win Lan captain then. Lan jump quickly and rhythmically, so that only faintly seen spiraling strings and voice. You always look with the eyes of admiration Lan. Worship under a tree, a few other layers you see what fun stories so the giggled. ttruong in a corner of the yard, cat and mouse game is vibrant. Mice threaded through palm trees and then jump over the balls to shoot very skilled group, do miserable cat always try to run a little tired friable ear. A few children around cheering and jumping back up. Undistributed been successes and failures, then suddenly "Spare, spare, spare," signaling the end of recess was empty points. We quickly lined up and then to the class exercise. Everyone happy face, radiant, but many expressed nostalgia. The longer you date one another, "Mai played yet!" Quiet atmosphere back at the field. Recess is short but it is rewarding, always nice to help us learn better.
S
9
31 tháng 3 2016
sau 3 ngày ăn thì còn lại số ngày là
27-3=24[ngày]
số em ăn trong 18 ngày là
180x24:18=240[người]
có số học sinh đến thêm là
240-180=60[em]
đ/s:60 em
30 tháng 5
số người ăn trong 1 ngày là:180x27=4860(người)
số người đến ăn trong 18 ngày là:4860:18=270(người)
số người đến thêm là:270-180=90(người)
xl bạn nha,mik viết nhầm lời giải và đơn vị thành người,bạn sửa lại nha
tick hộ mik với nha
TL:
18/27 = 2/3 và 4/6 = 2/3
2/3 + 2/3 = 4/3
HT