Tìm x thuộc Q A. x+5_6=3_4 B.2_3-x=3_5 C. 6_7-(x-1_2)= 5_6 22/07/2021 Bởi Sadie Tìm x thuộc Q A. x+5_6=3_4 B.2_3-x=3_5 C. 6_7-(x-1_2)= 5_6
Đáp án: $\text{Xin hay nhất}$ Giải thích các bước giải: $a) x+\dfrac{5}{6}=\dfrac{3}{4}$ $→x=\dfrac{3}{4}-\dfrac{5}{6}$ $→x=\dfrac{-1}{12}$ $b) \dfrac{2}{3}-x=\dfrac{3}{5}$ $→x=\dfrac{2}{3}-\dfrac{3}{5}$ $→x=\dfrac{1}{15}$ $c) \dfrac{6}{7}-(x-\dfrac{1}{2})=\dfrac{5}{6}$ $→x-\dfrac{1}{2}=\dfrac{6}{7}-\dfrac{5}{6}$ $→x-\dfrac{1}{2}=\dfrac{1}{42}$ $→x=\dfrac{1}{42}+\dfrac{1}{2}$ $→x=\dfrac{11}{21}$ Xin hay nhất Bình luận
A. `x+5/6=3/4` `x = 3/4- 5/6` `x = – 2/24` B. `2/3-x=3/5` `x= 2/3 – 3/5` `x = 1/15` `6/7-(x-1/2)= 5/6` `x – 1/2 = 6/7 – 5/6` `x – 1/2 = 1/42` `x = 1/42 + 1/2` `x = 22/42 = 11/21 ` Bình luận
Đáp án:
$\text{Xin hay nhất}$
Giải thích các bước giải:
$a) x+\dfrac{5}{6}=\dfrac{3}{4}$
$→x=\dfrac{3}{4}-\dfrac{5}{6}$
$→x=\dfrac{-1}{12}$
$b) \dfrac{2}{3}-x=\dfrac{3}{5}$
$→x=\dfrac{2}{3}-\dfrac{3}{5}$
$→x=\dfrac{1}{15}$
$c) \dfrac{6}{7}-(x-\dfrac{1}{2})=\dfrac{5}{6}$
$→x-\dfrac{1}{2}=\dfrac{6}{7}-\dfrac{5}{6}$
$→x-\dfrac{1}{2}=\dfrac{1}{42}$
$→x=\dfrac{1}{42}+\dfrac{1}{2}$
$→x=\dfrac{11}{21}$
Xin hay nhất
A.
`x+5/6=3/4`
`x = 3/4- 5/6`
`x = – 2/24`
B.
`2/3-x=3/5`
`x= 2/3 – 3/5`
`x = 1/15`
`6/7-(x-1/2)= 5/6`
`x – 1/2 = 6/7 – 5/6`
`x – 1/2 = 1/42`
`x = 1/42 + 1/2`
`x = 22/42 = 11/21 `