a. 3 3/4 + 1 3 / 8 – 2/3 b. 3/7 x 4/5 + 5/7 c.3/12 : 2/3 + 1 1/8 14/07/2021 Bởi Katherine a. 3 3/4 + 1 3 / 8 – 2/3 b. 3/7 x 4/5 + 5/7 c.3/12 : 2/3 + 1 1/8
Bạn tham khảo : a . $3 \dfrac{3}{4} + 1 \dfrac{3}{8} – \dfrac{2}{3}$ $=\dfrac{15}{4} + \dfrac{11}{8} – \dfrac{2}{3}$ $= \dfrac{41}{8} – \dfrac{2}{3}$$=\dfrac{107}{24}$ b . $\dfrac{3}{7} × \dfrac{4}{5} + \dfrac{5}{7}$ $= \dfrac{12}{35} + \dfrac{5}{7}$ $=\dfrac{37}{35}$ c. $\dfrac{3}{12} : \dfrac{2}{3} + 1 \dfrac{1}{8}$ $= \dfrac{3}{8} + \dfrac{9}{8}$ $= \dfrac{3}{2}$ Bình luận
Đáp án: Giải thích các bước giải: a. `3 3/4 + 1 3 / 8 – 2/3 ` `=41/8-2/3` `=107/24` b. `3/7 \times 4/5 + 5/7 ` `=12/35+5/7` `=37/35` c. `3/12 : 2/3 + 1 1/8` `=3/8+1 1/8` `=3/2` Bình luận
Bạn tham khảo :
a .
$3 \dfrac{3}{4} + 1 \dfrac{3}{8} – \dfrac{2}{3}$
$=\dfrac{15}{4} + \dfrac{11}{8} – \dfrac{2}{3}$
$= \dfrac{41}{8} – \dfrac{2}{3}$
$=\dfrac{107}{24}$
b .
$\dfrac{3}{7} × \dfrac{4}{5} + \dfrac{5}{7}$
$= \dfrac{12}{35} + \dfrac{5}{7}$
$=\dfrac{37}{35}$
c.
$\dfrac{3}{12} : \dfrac{2}{3} + 1 \dfrac{1}{8}$
$= \dfrac{3}{8} + \dfrac{9}{8}$
$= \dfrac{3}{2}$
Đáp án:
Giải thích các bước giải:
a. `3 3/4 + 1 3 / 8 – 2/3 `
`=41/8-2/3`
`=107/24`
b. `3/7 \times 4/5 + 5/7 `
`=12/35+5/7`
`=37/35`
c. `3/12 : 2/3 + 1 1/8`
`=3/8+1 1/8`
`=3/2`