Thuc hien phep tinh 2*3/7*1/2-1/2*3/7+1/3 11/08/2021 Bởi Adalynn Thuc hien phep tinh 2*3/7*1/2-1/2*3/7+1/3
Đáp án: $\frac{23}{42}$ Giải thích các bước giải: 2 . $\frac{3}{7}$ . $\frac{1}{2}$ – $\frac{1}{2}$ . $\frac{3}{7}$ + $\frac{1}{3}$ = $\frac{1}{2}$ . $\frac{3}{7}$ .(2-1) + $\frac{1}{3}$ = $\frac{1}{2}$ . $\frac{3}{7}$ +$\frac{1}{3}$ =$\frac{3}{14}$ + $\frac{1}{3}$ =$\frac{23}{42}$ Bình luận
Đáp án: `2 \times 3/7 \times 1/2 – 1/2 \times 3/7 + 1/3` `= 3/7 \times 1 – 1/2 \times 3/7 + 1/3` `= 3/7 \times (1 – 1/2) + 1/3` `= 3/7 \times 1/2 + 1/3` `= 3/14 + 1/3` `= {23}/42` Bình luận
Đáp án:
$\frac{23}{42}$
Giải thích các bước giải:
2 . $\frac{3}{7}$ . $\frac{1}{2}$ – $\frac{1}{2}$ . $\frac{3}{7}$ + $\frac{1}{3}$
= $\frac{1}{2}$ . $\frac{3}{7}$ .(2-1) + $\frac{1}{3}$
= $\frac{1}{2}$ . $\frac{3}{7}$ +$\frac{1}{3}$
=$\frac{3}{14}$ + $\frac{1}{3}$
=$\frac{23}{42}$
Đáp án:
`2 \times 3/7 \times 1/2 – 1/2 \times 3/7 + 1/3`
`= 3/7 \times 1 – 1/2 \times 3/7 + 1/3`
`= 3/7 \times (1 – 1/2) + 1/3`
`= 3/7 \times 1/2 + 1/3`
`= 3/14 + 1/3`
`= {23}/42`