(x-$\frac{1}{2}$):$\frac{1}{3}$+$\frac{5}{7}$=9$\frac{5}{7}$ 04/08/2021 Bởi Jade (x-$\frac{1}{2}$):$\frac{1}{3}$+$\frac{5}{7}$=9$\frac{5}{7}$
Đáp án: `(x-1/2) : 1/3 + 5/7 =9 5/7` `(x – 1/2) : 1/3 =9 5/7 – 5/7` `(x-1/2 ) : 1/3 =9` ` x-1/2 =9 xx 1/3` `x – 1/2 = 3` ` x =3 + 1/2=7/2` XIN HAY NHẤT NHA @hoang Bình luận
`(x-1/2): 1/3 + 5/7 = 9 5/7` `(x-1/2) : 1/3 = 9 5/7 – 5/7` `(x-1/2) : 1/3= 9` `x – 1/2 = 9.1/3` `x- 1/2= 3` `x = 3+1/2` `x= 7/2` Vậy `x= 7/2` b) `75% x – x = -1 3/4` `3/4 x – x = -7/4` `x(3/4 -1) = -7/4` `x . (-1/4) = -7/4` `x= -7/4 : (-1/4)` `x= -7/4 . (-4)` `x= 7` Vậy `x= 7` Bình luận
Đáp án:
`(x-1/2) : 1/3 + 5/7 =9 5/7`
`(x – 1/2) : 1/3 =9 5/7 – 5/7`
`(x-1/2 ) : 1/3 =9`
` x-1/2 =9 xx 1/3`
`x – 1/2 = 3`
` x =3 + 1/2=7/2`
XIN HAY NHẤT NHA
@hoang
`(x-1/2): 1/3 + 5/7 = 9 5/7`
`(x-1/2) : 1/3 = 9 5/7 – 5/7`
`(x-1/2) : 1/3= 9`
`x – 1/2 = 9.1/3`
`x- 1/2= 3`
`x = 3+1/2`
`x= 7/2`
Vậy `x= 7/2`
b) `75% x – x = -1 3/4`
`3/4 x – x = -7/4`
`x(3/4 -1) = -7/4`
`x . (-1/4) = -7/4`
`x= -7/4 : (-1/4)`
`x= -7/4 . (-4)`
`x= 7`
Vậy `x= 7`