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thinhicloud3
2 năm trước
Bài 1: Tìm số tự nhiên x, biết: a) 768 : ( x + 8 ) - 18 = 14 b) 135 - 3. ( x - 36 ) = 120 c) 32 chia het cho x va 6 < x < 20 d) x chia hết cho 43 và x có 2 chữ số Bài 2 : Cho 3 số : 1400, 1250, 1120 a) Phân tích các số trên ra thừa số nguyên tố b) Tim UCLN ( 1400, 1250 ) va BCNN ( 1250, 1120 ) Các bn giúp mk vs
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