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
D
0
NH
0
KN
11 tháng 4 2016
0,5 . 11/3 . 75% + 3/5
= 11/8 + 3/5
= 79/40
—–◄I❤U►(¯’•’¯)ƸӜƷ————ƸӜƷ(¯’•’¯)◄I❤U►
—–◄I❤U►(¯’•’¯)—–ƸӜƷ——–ƸӜƷ—–(¯’•’¯)◄I❤U►
–◄I❤U►(¯’•’¯)———-ƸӜƷ—-ƸӜƷ———-(¯’•’¯)◄I❤U►
◄I❤U►(¯’•’¯)————–ƸӜƷƸӜƷ————–(¯’•’¯)◄I❤U►
◄I❤U►(¯’•’¯)—————–ƸӜƷ—————–(¯’•’¯)◄I❤U►
◄I❤U►(¯’•’¯)’ƸӜƷ————-♥————–ƸӜƷ(¯’•’¯)◄I❤U►
◄I❤U►(¯’•’¯)ƸӜƷ—————————–ƸӜƷ(¯’•’¯)◄I❤U►
-◄I❤U►(¯’•’¯)ƸӜƷ—————————-ƸӜƷ(¯’•’¯)◄I❤U►
–◄I❤U►(¯’•’¯)ƸӜƷ—————————ƸӜƷ¯’•’¯)◄I❤U►
—-◄I❤U►(¯’•’¯)ƸӜƷ———————–ƸӜƷ(¯’•’¯)◄I❤U►
——◄I❤U►(¯’•’¯)ƸӜƷ——————-ƸӜƷ(¯’•’¯)◄I❤U►
——–◄I❤U►(¯’•’¯)ƸӜƷ—————ƸӜƷ(¯’•’¯)◄I❤U►
———-◄I❤U►(¯’•’¯)ƸӜƷ———-ƸӜƷ(¯’•’¯)◄I❤U►
————◄I❤U►(¯’•’¯)ƸӜƷ—–ƸӜƷ(¯’•’¯)◄I❤U►
————–◄I❤U►(¯’•’¯)ƸӜƷ-ƸӜƷ(¯’•’¯)◄I❤U►
—————–◄I❤U►(¯’•’¯).ƸӜƷ(¯’•’¯)◄I❤U►
——————–◄I❤U►(¯’•’¯).(¯’•’¯)◄I❤U►
————————◄I❤U►(¯’•’¯)◄I❤U►
—————————-◄I❤U►◄I❤U►
———————————-◄I❤U►
17 tháng 8 2023
a: =>x-2/5=3/4:1/3=3/4*3=9/4
=>x=9/4+2/5=45/20+8/20=53/20
b: =>x-2/3=7/3:4/5=7/3*5/4=35/12
=>x=35/12+2/3=43/12
c: 1/3(x-2/5)=4/5
=>x-2/5=4/5*3=12/5
=>x=12/5+2/5=14/5
d: =>2/3x-1/3-1/4x+1/10=7/3
=>5/12x-7/30=7/3
=>5/12x=7/3+7/30=77/30
=>x=77/30:5/12=154/25
e: \(\Leftrightarrow x\cdot\dfrac{3}{7}-\dfrac{2}{7}+\dfrac{1}{2}-\dfrac{5}{4}x+\dfrac{5}{2}=0\)
=>\(x\cdot\dfrac{-23}{28}=\dfrac{2}{7}-3=\dfrac{-19}{7}\)
=>x=19/7:23/28=76/23
f: =>1/2x-3/2+1/3x-4/3+1/4x-5/4=1/5
=>13/12x=1/5+3/2+4/3+5/4=257/60
=>x=257/65
i: =>x^2-2/5x-x^2-2x+11/4=4/3
=>-12/5x=4/3-11/4=-17/12
=>x=17/12:12/5=85/144
T
9 tháng 8 2023
a) \(x-\dfrac{3}{4}=6\times\dfrac{3}{8}\)
\(x-\dfrac{3}{4}=\dfrac{9}{4}\)
=> \(x=\dfrac{9}{4}+\dfrac{3}{4}=3\)
b) \(\dfrac{7}{8}:x=3-\dfrac{1}{2}\)
\(\dfrac{7}{8}:x=\dfrac{5}{2}\)
=> \(x=\dfrac{7}{8}:\dfrac{5}{2}=\dfrac{7}{20}\)
c) \(x+\dfrac{1}{2}\times\dfrac{1}{3}=\dfrac{3}{4}\)
\(x+\dfrac{1}{6}=\dfrac{3}{4}\)
=> \(x=\dfrac{3}{4}-\dfrac{1}{6}=\dfrac{7}{12}\)
d) \(\dfrac{3}{2}\times\dfrac{4}{5}-x=\dfrac{2}{3}\)
\(\dfrac{6}{5}-x=\dfrac{2}{3}\)
=> \(x=\dfrac{6}{5}-\dfrac{2}{3}=\dfrac{8}{15}\)
e) \(x\times3\dfrac{1}{3}=3\dfrac{1}{3}:4\dfrac{1}{4}\)(?)
\(x\times\dfrac{10}{3}=\dfrac{40}{51}\)
=> \(x=\dfrac{40}{51}:\dfrac{10}{3}=\dfrac{4}{17}\)
f) \(5\dfrac{2}{3}:x=3\dfrac{2}{3}-2\)
\(\dfrac{17}{3}:x=\dfrac{5}{3}\)
=> \(x=\dfrac{17}{3}:\dfrac{5}{3}=\dfrac{17}{5}\)
9 tháng 8 2023
a: =>x-3/4=18/8=9/4
=>x=9/4+3/4=12/4=3
b: =>7/8:x=5/2
=>x=7/8:5/2=7/8*2/5=14/40=7/20
c: x+1/2*1/3=3/4
=>x+1/6=3/4
=>x=3/4-1/6=9/12-2/12=7/12
d: =>12/10-x=2/3
=>6/5-x=2/3
=>x=6/5-2/3=18/15-10/15=8/15
e: =>x*10/3=10/3:17/4=10/3*4/17
=>x=4/17
f: =>17/3:x=13/3-5/2=26/6-15/6=11/6
=>x=17/3:11/6=17/3*6/11=34/11
\(\frac{x+3}{-4}=\frac{-9}{x+3}\Rightarrow\left(x+3\right)^2=\left(-4\right).\left(-9\right)\)
\(\Rightarrow\left(x+3\right)^2=36\)
\(\Rightarrow\left(x+3\right)^2=6^2\) hoặc \(\left(x+3\right)^2=\left(-6\right)^2\)
\(\Rightarrow x+3=6\) hoặc \(x+3=-6\)
\(\Rightarrow x=3\) hoặc \(x=-9\)
là sao