Toán 3/5 * 5/21 – 1/7https://hoidap247.com/lam-sao-de-duoc-cong-diem 26/07/2021 By Jade 3/5 * 5/21 – 1/7https://hoidap247.com/lam-sao-de-duoc-cong-diem
Đáp án: $\frac{3}{5}$ x $\frac{5}{21}$ – $\frac{1}{7}$ =$\frac{1}{7}$ – $\frac{1}{7}$ 0 haynhat ạ Trả lời
3/5 x 5/21 – 1/7
=15/105 – 1/7
=15:15/105:15 – 1/7
= 1/7-1/7
=0
Đáp án:
$\frac{3}{5}$ x $\frac{5}{21}$ – $\frac{1}{7}$
=$\frac{1}{7}$ – $\frac{1}{7}$
0
haynhat ạ