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Giúp mình minh cyo 5 sao và ctrlh

81.Shall we go camping in Con Vanh Beach this Sunday? Let

bai 1 tinh a biet : 267 +a 327= 488 * 2 b) tinh tong a+b, biet a,b la cac so tu nhien va 999<a<b<1002 bai 2 tong cua hai so tu nhien se thay doi nhu the nao neu ta tang tung so hang len gap 9 lan. b tong cac chu so coua mot so co hai chu so la 12. neu doi cho cac chu so thi so moi hon so ban 18 don vi. tim so do? c ba so co tong la 1458. so thu nhat bang 1/3 so thu hai. so thu hai bang 3/2 so thu ba. tim 3 so do. bai 3 tim 2 so , biet so lon co 3 chu so va gap 9 lan so be va neu xoa chu so 4 o hang tram cua so lon thi duoc so be b) cho phan so 7/8. hay tim 1 so sao cho khi tu so tru di so do va mau so cong voi so do ta duoc 1 phan so moi bang 1/4. c) hieu cua hai so bang 315. tim 2 so do, biet rang neu xoa di chu so 0 o hang don vi cua so lon thi duoc so be.

Giúp hộ 2 câu đi mà nhanh nha rep mọi lúc

giúp mk vs mk cần gấp giải thích nữa nha

Chứng minh rằng nếu a > 0, b > 0, c > 0 và a < b thì $\frac{a}{b}$ $<\frac{a+c}{b+c}$ hepmeeeeeeeee

Find and correct the mistakes 1. joe is a badder student than Mia 2.mia is fater than joe. 3. joe isn't older that Mia. 4.joe is moderner than Mia. 5.Mia is friendlyer than joe. 6. Mia is more nice than joe. 7. joe is a gooder football than Mia. 8.joe's pants are shorter Mia's. 9.english is difficulter than french. 10. Mia is a dancer better than joe.

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giúp mk vs mk cần gấp giải thích nữa nha