hai số có tổng là 112,5 .Biết 1/2 số thứ nhất bằng 40% số thứ hai.Tìm số thứ nhất Giúp mình với ah

Các câu hỏi liên quan

I/ Gạch chân từ, cụm từ thích hợp nhất trong ngoặc để hoàn thành câu : 6/ I have ( a few / a little / many / much )……………………. exercises to do. I can’t go with you. 7/ There is ( many / much / a few / a little )…………….. water in the bottle. Do you want to drink it ? 8/ Where are you ( in / on / at / from )……………. ? - I’m from Viet Nam. 9/ ( on / at / in / for )…………… the spring, I always ride my bike. 10/ I am ( in/ on / at / from )…………….. vacation in Hoi An. 11/ I ( see / don’t see / am seeing / am going to see )………………….. Ngoc Son Temple tomorrow. 12/ What do you want ( do / to do / doing / are doing )………………………… now ? 13/ What about ( play / to play / playing / is playing )……………………… a soccer match now ? 14/ It’s never ( hot / cool / cold / warm )…………………….. in the winter. 15/ Me Kong is ( long river / a longer river / a longest river / the longest )…………….. in Viet Nam 16/ Da Nang is ( small / smaller / smallest / the smallest )……………………. than Ho Chi Minh city. 17/ Which is bigger: Ha Noi ( or / and / but / so )………………………. Ho Chi Minh City ? 18/ Mai doesn’t like playing soccer. She ( always / usually / never / often )………………… plays soccer. 19/ ( Who / What / When / Where )…………………….. do you do when it’s hot ? 20/ ( What / Where / When / Which )………………… are you going to stay ? - In a hotel.