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hoangphucng270
2 năm trước
Bài 1: Cách viết nào là phân số ? Vì sao ? a. -3/8 b. 2,5/7 c. 0/-8 d. -3/-16 e. 3,7/0 Bài 2: Cho B = { 2; 0; - 5; 1,7}. Hãy viết tất cả các phân số a/b; với a # b; b # 0 Bài 3: ?1sgk/8 Bài 4: Tìm x; y thuộc Z; biết: a. x/6 = 3/2 b. -8/x = 4/3 c. x/2 = y/-3 = 5/6 BTVN:6; 7sgk/8
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