Các số thoả mãn đề bài là :
12 , 24 , 36 , 48
Tìm x :
a) ( x - 15 ) . 35 = 0
x - 15 = 0 : 35
x - 15 = 0
x = 0 + 15
x = 15
b) 32 ( x - 10 ) = 32
x - 10 = 32 : 32
x - 10 = 1
x = 1 + 10
x = 11
chữ số hàng trăm gap 2 lan hang don vi , chu so hang chuc gap 3 chu so hang tram . biet chu so hang don vi la 3 . tim trung binh cong cua so vua tim duoc voi so 126
tim so co 4 chu so,biet chu so hang don vi gap 2 lan chu so hang chuc ,chu so hang chuc gap 2 lan chu so hang tram ,chu so hang tram gap 2 lan chu so hang nhginn.So do la: ?
tim so co ba chu so ma chu so hang chuc gap 3 lan chu so hang tram ,chu so hang don vi gap 3 lan chu so hang chuc
cho so le co ba chu so .biet chu so hang tram gap 2 lan chu so hang chuc ,chu so hang chuc gap 3 lanchu so hang don vi . so da cho la ........
cho so chan co hai chu so biet chu so hang chuc gap 3 lan chu so hang don vi so da cho la bao nhieu ?
cho so chan co hai chu so.Biet chu so hang chuc gap 4 lan chu so hang don vi . So da cho la ........
TIM SO CO BA CHU SO BIET TRUNG BINH CONG 3 SO DO BANG 3 ,CHU SO HANG DON VI GAP DOI TONG CAC CHU SO HANG TRAM VA HANG CHUC
so co hai chu so ma tong cac chu so bang 12 va hieu giua so hang chuc va hang don vi bang hai la bao nhieu ?
Tim so co 3 chu so biet rang chu so hang tram gap 2 lan chu so hang don vi va chu so hang don vi gap 3 lan chu so hang chuc Tim so do ?
Bai nay hoi kho mot chu nha!
