\(\dfrac{1}{2}=\dfrac{1.6}{2.6}=\dfrac{6}{12}\)
\(\dfrac{2}{3}=\dfrac{2.4}{3.4}=\dfrac{8}{12}\)
giữ nguyên \(\dfrac{3}{12}\)
\(\dfrac{1}{2}=\dfrac{1.6}{2.6}=\dfrac{6}{12}\)
\(\dfrac{2}{3}=\dfrac{2.4}{3.4}=\dfrac{8}{12}\)
giữ nguyên \(\dfrac{3}{12}\)
4/9 va 7/12
quy dong
quy dong
1 phan 2, 2 phan 3 va 3 phan 5
3 lọ mực do va 2 lo muc xanh gia 4.600 dong
2 lo muc do va 3 lo muc xanh gia 4.400 dong
Tính giá tien moi lo muc
1 Kim dong ten that la gi . 2 tong tu 1 den 100 . 3 tong 3 so la 120 so thu 1 = 2/3 st2 va = 2/7 so thu 3 tim 3 số
quy dong cac phan so sau a, 1 phan 3 va 5 phan 6 b,7 phan 9 va 1 phan 6 c, 12 phan 15 va 2 phan 5
mua 4 cay but va 3 cuc gom het 25000 dong. neu mua 2 cai but va 3 cuc gom het 17000 dong . tinh gia tien moi loai
ghi ro loi giai
MUA 2 QUA TRUNG GA VA 3 QUA TRUNG VIT HÊT 13.000 DONG .MUA 4 QUA TRUNG GA VA 5 QUA TRUNG VIT HÊT 23.000 DONG .TINH GIA TIEN MOI CAI TRUNG
AI NHANH MINH CHO 1 TICH
3 ban chung tien mua mot qua bong xuan gop 1/3 tong so tien dinh gop it hon 3/5 so tien dinh va hợi gop la 2 nghin dong hoi gop 14 nghin dong hợi qua bong bao nhieu tien
quang song ab dai 50 km. mot cano khi xuoi dong het 2 gio va khi nguoc dong het 3 gia 20 phut tinh van toc cano khi xuoi dong khi nguoc dong va van toc cua nuoc chay.biet van toc cua cano khi nuoc lang la 20km/gio