mình cần giải gấp , chủ đề ko liên quan vì đề cô cho

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1. VỀ LẠI TRƯỜNG XƯA
2. VỀ THĂM THẦY TÔI
3. HOÀI NIỆM ÁO TRẮNG NGÀY XƯA
4. CÒN ĐÂY HOÀI NIỆM
5. ĐÓN CON
6. VỀ LẠI TRƯỜNG XƯA
7. KÍNH THẦY
8. TRƯỜNG XƯA GẶP LẠI
9. BÁT NHỚ TRƯỜNG XƯA
Chủ đề : Family
I love my family very much. There are four people in my family: my father, my mother, my brother and me. My father is a teacher. He is very kind. My mother is a nurse. She takes care of sick people in the hospital. My brother is a student. He is good at football. I am a student too. We often have dinner together and talk happily. My family is small but happy.
Chủ đề : My school
My school is very big and beautiful. It has many classrooms, a library, and a playground. My classroom is on the second floor. It is bright and clean. My teacher is very friendly and kind. I have many friends at school. We often play games together at break time. I like English and Math the most. I love my school very much.
I love my family very much. There are four people in my family: my father, my mother, my brother and me. My father is a teacher. He is very kind. My mother is a nurse. She takes care of sick people in the hospital. My brother is a student. He is good at football. I am a student too. We often have dinner together and talk happily. My family is small but happy.
\(a,\left(\dfrac{5}{6}+\dfrac{2}{3}\right)\times\dfrac{3}{4}\\ =\left(\dfrac{5}{6}+\dfrac{4}{6}\right)\times\dfrac{3}{4}\\ =\dfrac{9}{6}\times\dfrac{3}{4}\\ =\dfrac{3}{2}\times\dfrac{3}{4}\\ =\dfrac{9}{8}\\ b,\dfrac{7}{3}\times\dfrac{3}{4}+\dfrac{7}{3}\times\dfrac{4}{5}\\ =\dfrac{7}{3}\times\left(\dfrac{3}{4}+\dfrac{4}{5}\right)\\ =\dfrac{7}{3}\times\left(\dfrac{15}{20}+\dfrac{16}{20}\right)\\ =\dfrac{7}{3}\times\dfrac{31}{20}\\ =\dfrac{217}{60}\\ c,\dfrac{7}{5}+\dfrac{4}{3}+\dfrac{7}{5}+\dfrac{4}{3}\\ =\left(\dfrac{7}{5}+\dfrac{7}{5}\right)+\left(\dfrac{4}{3}+\dfrac{4}{3}\right)\\ =\dfrac{14}{5}+\dfrac{8}{3}\\ =\dfrac{42}{15}+\dfrac{40}{15}\\ =\dfrac{82}{15}\)
từ từ :")) cía nii cách 1