2/3 × |3/4 - 1,5| - hỗn số 1 1/6
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
26 tháng 2 2023
a: =>3/5-x+13/20=5/6
=>11/10-x=5/6
=>x=11/10-5/6=4/15
b: =>x=4/9+5/9=1
c: =>3/2-2x=16/3:8/3=2
=>2x=-1/2
=>x=-1/4
d: =>x+1,5=-5/8*8/5=-1
=>x=-2,5
6 tháng 8 2022
a: \(\Leftrightarrow\left(\dfrac{13}{4}:x\right)\cdot\left(-\dfrac{5}{4}\right)=\dfrac{-10}{6}-\dfrac{5}{6}=\dfrac{-15}{6}=\dfrac{-5}{2}\)
\(\Leftrightarrow\dfrac{13}{4}:x=\dfrac{5}{2}\cdot\dfrac{5}{4}=\dfrac{25}{8}\)
hay \(x=\dfrac{13}{4}:\dfrac{25}{8}=\dfrac{13}{4}\cdot\dfrac{8}{25}=\dfrac{26}{25}\)
b: \(\Leftrightarrow\dfrac{3}{4}:x=\dfrac{11}{36}-\dfrac{1}{4}=\dfrac{2}{36}=\dfrac{1}{18}\)
=>\(x=\dfrac{3}{4}:\dfrac{1}{18}=\dfrac{54}{4}=\dfrac{27}{2}\)
c: \(\Leftrightarrow\left(-\dfrac{6}{5}+x\right):\left(-3.6\right)=-\dfrac{7}{4}+\dfrac{1}{4}\cdot8=\dfrac{1}{4}\)
=>x-6/5=-9/10
=>x=3/10
17 tháng 9 2020
\(\left|\frac{5}{-4}\right|-\left|\frac{1}{-3}\right|+-\frac{5}{6}-4\frac{1}{2}\)
\(=\left|-\frac{5}{4}\right|-\left|\frac{-1}{3}\right|+\frac{-5}{6}-\frac{9}{2}\)
\(=\frac{5}{4}-\frac{1}{3}+\frac{-5}{6}-\frac{9}{2}=-\frac{53}{12}\)
\(\frac{5}{8}-\left|-\frac{1}{12}\right|-3\frac{1}{4}+\left|-\frac{5}{6}\right|\)
\(=\frac{5}{8}-\frac{1}{12}-\frac{13}{4}+\frac{5}{6}=-\frac{15}{8}\)
\(\frac{3}{-7}+\left|-\frac{5}{12}\right|+3\frac{1}{4}+\left|-\frac{5}{6}\right|\)
\(=\frac{-3}{7}+\frac{5}{12}+\frac{13}{4}+\frac{5}{6}=\frac{57}{14}\)
\(1\frac{3}{5}-\left|\frac{1}{-4}\right|+\frac{2}{-3}-\left|-\frac{1}{2}\right|\)
\(=\frac{8}{5}-\left|\frac{-1}{4}\right|+\frac{-2}{3}-\frac{1}{2}\)
\(=\frac{8}{5}-\frac{1}{4}+\frac{-2}{3}-\frac{1}{2}\)
\(=\frac{27}{20}+\frac{-7}{6}=\frac{27}{20}-\frac{7}{6}=\frac{11}{60}\)
TM
0
S
23 tháng 7 2017
\(\frac{2}{5}\cdot\frac{1}{2}-\frac{2}{5}\cdot\frac{1}{3}-\frac{2}{5}\cdot\frac{1}{6}\)
\(=\frac{2}{5}\cdot\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
\(=\frac{2}{5}\cdot0=0\)
\(\frac{19}{11}+\left(\frac{8}{13}+\frac{3}{11}\right)\)
\(=\frac{19+3}{11}+\frac{8}{13}\)
\(=2+\frac{8}{13}=\frac{34}{13}\)
\(1,5+2\frac{3}{5}+\frac{4}{7}\)
\(=\frac{3}{2}+\frac{13}{5}+\frac{4}{7}\)
\(=\frac{327}{70}\)
\(x-\frac{5}{4}=6\cdot\frac{5}{8}\)
\(x-\frac{5}{4}=\frac{15}{4}\)
\(x=\frac{15}{4}+\frac{5}{4}\)
\(x=\frac{15+5}{4}=\frac{20}{4}=5\)
\(x\div2\frac{3}{4}=5\frac{2}{3}\)
\(x=5\frac{2}{3}\cdot2\frac{3}{4}\)
\(x=\frac{187}{12}\)
\(\frac{2}{3}\div x=\frac{3}{4}\)
\(x=\frac{2}{3}\div\frac{3}{4}\)
\(x=\frac{8}{9}\)
0, 75 = 3/4
Hiệu số phần bằng nhau là:
4 - 3 = 1
Số bé là:
0, 75 : 1 x 3 = 2, 25
Số lớn là:
2, 25 + 0, 75 = 3
Đ/s: ...
Trung bình cộng của 3 số là:
6045 : 3 = 2015
=> Số thứ 2 là 2015
Số thứ nhất là:
2015 - 1 = 2014
Số thứ 3 là:
2015 + 1 = 2016
Đ/s: ...
KH
2
4 tháng 10 2021
\(y-3\frac{3}{4}=1\frac{1}{6}\)
=> \(y-\frac{15}{4}=\frac{7}{6}\)
=> \(y=\frac{7}{6}+\frac{15}{4}\)
=> \(y=\frac{14}{12}+\frac{45}{12}\)
=> \(y=\frac{59}{12}\)
11 tháng 8 2023
2:
a: =4+3/8+5+2/3
=9+3/8+2/3
=216/24+9/24+16/24
=216/24+25/24
=241/24
b; =2+3/8+1+1/4+3+6/7
=6+3/8+1/4+6/7
=6+5/8+6/7
=419/56
c: \(=2+\dfrac{3}{8}-1-\dfrac{1}{4}+5+\dfrac{1}{3}\)
=6+3/8-1/4+1/3
=6+1/8+1/3
=6+11/24
=155/24
d: \(=3+\dfrac{5}{6}+6\cdot\dfrac{13}{6}\)
=3+13+5/6
=16+5/6
=101/6
e: =3+1/2+4+5/7-5-5/14
=3+4-5+1/2+5/7-5/14
=2+7/14+10/14-5/14
=2+12/14
=2+6/7=20/7
f: =9/2+1/2:11/2
=9/2+1/11
=99/22+2/22=101/22
11 tháng 8 2023
2:
a: =4+3/8+5+2/3
=9+3/8+2/3
=216/24+9/24+16/24
=216/24+25/24
=241/24
b; =2+3/8+1+1/4+3+6/7
=6+3/8+1/4+6/7
=6+5/8+6/7
=419/56
c: \(=2+\dfrac{3}{8}-1-\dfrac{1}{4}+5+\dfrac{1}{3}\)
=6+3/8-1/4+1/3
=6+1/8+1/3
=6+11/24
=155/24
d: \(=3+\dfrac{5}{6}+6\cdot\dfrac{13}{6}\)
=3+13+5/6
=16+5/6
=101/6
e: =3+1/2+4+5/7-5-5/14
=3+4-5+1/2+5/7-5/14
=2+7/14+10/14-5/14
=2+12/14
=2+6/7=20/7
f: =9/2+1/2:11/2
=9/2+1/11
=99/22+2/22=101/22
7 tháng 7 2017
Câu I: Ta có:
|5 - 3x| + 2/3=1/6
\(\Rightarrow\) |5 - 3x| =1/6- 2/3
\(\Rightarrow\) |5 - 3x| =-1/2
\(\Rightarrow\)5-3x= -1/2 hoặc 5-3x=1/2
\(\Rightarrow\)x=11/6 hoặc x=3/2.
Câu K: Ta có
- 2,5 + |3x + 5| = -1,5
\(\Rightarrow\) |3x + 5| = -1,5-(- 2,5 )
\(\Rightarrow\) |3x + 5| = 1
\(\Rightarrow\)3x + 5 = 1 hoặc 3x + 5 = -1
\(\Rightarrow\)x= -4/3 hoặc x= -2
2/3*|3/4-1.5|-1/1/6
=2/3*|3/4-3/2|-7/6
=2/3*|3/4-6/4|-7/6
=2/3*3/4-7/6
=1/2-7/6
=3/6-7/6
=-4/6=-2/3