PT
4
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Các câu hỏi dưới đây có thể giống với câu hỏi trên
TL
5
2 tháng 9 2016
a, (10/3:x).(-5/4)=-10/3
10/3:x=-10/3:(-5/4)
10/3:x=8/3
x=10/3:8/3
x=5/4
b,(-6/5+x):(-18/5)=-1/4
-6/5+x=-1/4.(-18/5)
-6/5+x=9/10
x=9/10-(-6/5)=9/10+6/5
x=21/10
c,-22/15.x+1/3=-2/5
-22/15.x=-2/5-1/3=-11/15
x=-11/15:(-22/15)
x=11/21
d,(0,25-30%x).1/3=-31/6+1/4=-59/12
1/4-3/10x=-59/12:1/3=-59/4
3/10x=1/4-(-59/4)=1/4+59/4=15
x=15:3/10
x=50
e,(0,5x-3/7):1/2=8/7
1/2x=8/7.1/2=4/7
x=4/7:1/2
x=8/7
RS
25 tháng 3 2018
a) x= 1/4
b) x= -7/144
c) x= 25/6
d) x=17/7
e) x= 80/63
f) x= -45/14
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
26 tháng 2
Câu a:
4/9.x = 1/9
x = 1/9 : 4/9
x = 1/9 x 9/4
x = 1/4
vậy x = 1/4
Câu b:
x : -1/2 = 7/12
x = 7/12 x (-1/2)
x = - 7/24
Vậy x = - 7/24
Câu c:
-5/4 : x = -3/10
x = -5/4 : (-3/10)
x = -5/4 x (-10/3)
x = 25/6
Vậy x = 25/6
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
23 tháng 8 2023
-37 + 14 +26 + 37
=-37 + 37 + 14 + 36
=0 + 50
=50
-24 + 6 + 10 + 24
=(-24 + 24) +(6+10)
= 0+16
= 16
S
30 tháng 3 2017
a, \(\dfrac{7}{18}x-\dfrac{2}{3}=\dfrac{5}{18}\)
\(\dfrac{7}{18}x=\dfrac{5}{18}+\dfrac{2}{3}\)
\(\dfrac{7}{18}x=\dfrac{17}{18}\)
\(x=\dfrac{17}{18}\div\dfrac{7}{18}\)
\(x=\dfrac{17}{7}\)
C
30 tháng 3 2017
a) \(\dfrac{7}{18}\).x-\(\dfrac{2}{3}\)=\(\dfrac{5}{18}\)
\(\dfrac{7}{18}\).x =\(\dfrac{5}{18}\)+\(\dfrac{2}{3}\)
\(\dfrac{7}{18}\).x = \(\dfrac{17}{18}\)
x = \(\dfrac{17}{18}\) :\(\dfrac{7}{18}\)
x =\(\dfrac{17}{7}\)
b)\(\dfrac{4}{9}\) - \(\dfrac{7}{8}\).x =\(\dfrac{-2}{3}\)
\(\dfrac{7}{8}\).x =\(\dfrac{4}{9}\)-\(\dfrac{-2}{3}\)
\(\dfrac{7}{8}\).x =\(\dfrac{10}{9}\)
x =\(\dfrac{10}{9}\) : \(\dfrac{7}{8}\)
x =\(\dfrac{80}{63}\)
c)\(\dfrac{1}{6}\)+\(\dfrac{-5}{7}\): \(\dfrac{-7}{18}\)
\(\dfrac{1}{6}\)+\(\dfrac{90}{49}\)
\(\dfrac{589}{294}\)
SN
4 tháng 7 2016
a/ \(\frac{6}{7}x=\frac{18}{23}\)
\(x=\frac{18}{23}:\frac{6}{7}=\frac{21}{23}\)
b/ \(2\frac{1}{2}x=\frac{5}{6}\)
\(=>\frac{5}{2}x=\frac{5}{6}\)
\(x=\frac{5}{6}:\frac{5}{2}=\frac{1}{3}\)
c/\(x:2\frac{3}{4}=9\frac{5}{8}\)
\(x:\frac{11}{4}=\frac{77}{8}\)
\(x=\frac{77}{8}\cdot\frac{11}{4}=\frac{847}{32}\)
d/\(7\frac{1}{7}\cdot\frac{1}{7}\cdot x=22\frac{1}{8}\)
\(\frac{50}{49}x=\frac{177}{8}\)
\(x=\frac{177}{8}:\frac{50}{49}=\frac{8673}{400}\)
4 tháng 7 2016
\(a,\frac{6}{7}.x=\frac{18}{23}\) \(\Rightarrow x=\frac{18}{23}:\frac{6}{7}=\frac{18}{23}.\frac{7}{6}=\frac{21}{23}\)
\(b,2\frac{1}{2}.x=\frac{5}{6}\Rightarrow\frac{5}{2}.x=\frac{5}{6}\Rightarrow x=\frac{5}{6}:\frac{5}{2}=\frac{5}{6}.\frac{2}{5}=\frac{1}{3}\)
\(c,x:2\frac{3}{4}=9\frac{5}{8}\Rightarrow x:\frac{11}{4}=\frac{77}{8}\Rightarrow x=\frac{77}{8}.\frac{11}{4}=\frac{847}{32}\)
\(d,7\frac{1}{7}.\frac{1}{7}.x=22\frac{1}{8}\Rightarrow\frac{50}{49}.x=\frac{177}{8}\Rightarrow x=\frac{177}{8}:\frac{50}{49}=\frac{177}{8}.\frac{49}{50}=\frac{8673}{400}\)
` 5/8 -x = 7/6`
`=> x= 5/8 -7/6`
`=>x= 30/48 - 56/48`
`=>x=-26/48`
`=>x=-13/24`
__
`1/6 + 1/5 :x =-7 /18`
`=> 1/5 :x =-7 /18 -1/6`
`=> 1/5 :x =-7 /18- 3/18`
`=> 1/5 :x =-5/9`
`=>x= 1/5 : (-5/9)`
`=>x= 1/5 xx (-9/5)`
`=>x=-9/25`
a: x=5/8-7/6=15/24-28/24=-13/24
b: =>1/5:x=-7/18-1/6=-7/18-3/18=-10/18=-5/9
=>x=-1/5:5/9=-9/25
\(a,\dfrac{5}{8}-x=\dfrac{7}{6}\\ x=\dfrac{5}{8}-\dfrac{7}{6}\\ x=-\dfrac{13}{24}\\ b,\dfrac{1}{6}+\dfrac{1}{5}:x=-\dfrac{7}{18}\\ \dfrac{1}{5}:x=-\dfrac{7}{18}-\dfrac{1}{6}\\ \dfrac{1}{5}:x=-\dfrac{5}{9}\\ x=\dfrac{1}{5}:-\dfrac{5}{9}\\ x=-\dfrac{9}{25}.\)
\(\dfrac{5}{8}-x=\dfrac{7}{6}\\ x=\dfrac{5}{8}-\dfrac{7}{6}\\ x=\dfrac{15}{24}-\dfrac{28}{24}\\ x=-\dfrac{7}{24}\)
\(\dfrac{1}{6}+\dfrac{1}{5}:x=-\dfrac{7}{18}\\ \dfrac{1}{5}:x=-\dfrac{7}{18}-\dfrac{1}{6}\\ \dfrac{1}{5}:x=-\dfrac{7}{18}-\dfrac{3}{18}\\ \dfrac{1}{5}:x=-\dfrac{5}{9}\\ x=\dfrac{1}{5}:\left(-\dfrac{5}{9}\right)\\ x=-\dfrac{9}{25}\)
Hi
Em tin tưởng chị lắm ó :>
xem lại câu b, nhé ⚡