\(4\frac{1}{3}:\frac{x}{4}=6:0,3\) Tìm x
Tìm x trong tỉ lệ thức:a,\(4\frac{1}{3}:\frac{x}{4}=6:0,3\)
\(4\frac{1}{3}:\frac{x}{4}=6:0,3\)
\(\Rightarrow\frac{13}{3}:\frac{x}{4}=20\)
\(\Rightarrow\frac{x}{4}=\frac{13}{3}:20\)
\(\Rightarrow\frac{x}{4}=\frac{13}{60}\)
\(\Rightarrow x=\frac{13}{15}\)
1) Tìm x Biết
x-\(\frac{1}{3}\)=\(\frac{3}{4}\)
\(\frac{-1,25}{x}=\frac{1}{-8}\)
\(4\frac{1}{3}\div\frac{x}{4}=6:0,3\)
\((x-\frac{4}{9})^2=\frac{1}{4}\)
\(9^x\times81^x=3^{2010}\)
tặng 3 tym cho những người trả lời nhanh nhất trong vòng 2 ngày
Tìm x, biết
\(a,1\frac{2}{3}:\frac{x}{4}=6:0,3\)
\(b,2\frac{2}{3}:x=1\frac{7}{9}:2\frac{2}{3}\)
Tìm x,biết
A,\(1\frac{1}{2}:\frac{x}{4}=6:0,3\)
B,\(2\frac{2}{3}:x=1\frac{7}{9}:2\frac{2}{3}\)
Tìm x trong các tỉ lệ thức sau:
a) \(\left(\frac{1}{3}.x\right):\frac{2}{3}=1\frac{3}{4}:\frac{2}{5}\)
b) 4,5 : 0,3 = 2,25 : (0,1 .x)
c) 8 : \(\left(\frac{1}{4}.x\right)=2:0,02\)
d) 3 : \(2\frac{1}{4}=\frac{3}{4}:\left(6.x\right)\)
\(\frac{1}{3}x:\frac{2}{3}=1\frac{3}{4}:\frac{2}{5}\)
\(\Rightarrow\frac{1}{3}x:\frac{2}{3}=\frac{35}{8}\)
\(\Rightarrow\frac{1}{3}x=\frac{35}{12}\)
\(\Rightarrow x=\frac{35}{4}\)
a) \(\left(\frac{1}{3}\cdot x\right):\frac{2}{3}=1\frac{3}{4}:\frac{2}{5}\)
\(=\left(\frac{1}{3}\cdot x\right):\frac{2}{3}=\frac{35}{8}\)
\(\Rightarrow\frac{1}{3}\cdot x=\frac{35}{8}\cdot\frac{2}{3}\)
\(\Rightarrow x=\frac{35}{12}:\frac{1}{3}=\frac{35}{4}\)
b) \(4,5:0,3=2,5:\left(0,1\cdot x\right)\)
\(=15=2,5:\left(0,1\cdot x\right)\)
\(\Rightarrow0,1\cdot x=2,25:15\)
\(\Rightarrow x=\frac{3}{20}:0,1=\frac{3}{2}=1,5\)
c) \(8:\left(\frac{1}{4}\cdot x\right)=2:0,02\)
\(8:\left(\frac{1}{4}\cdot x\right)=100\)
\(\Rightarrow\frac{1}{4}\cdot x=8:100\)
\(\Rightarrow x=\frac{2}{25}:\frac{1}{4}=\frac{8}{25}=0,32\)
d) \(3:2\frac{1}{4}=\frac{3}{4}:\left(6\cdot x\right)\)
\(=\frac{4}{3}=\frac{3}{4}:\left(6:x\right)\)
\(\Rightarrow6\cdot x=\frac{3}{4}:\frac{4}{3}\)
\(\Rightarrow x=\frac{9}{16}:6=\frac{3}{32}=0,09375\)
1) Tìm x
a) 4,5 : 0,3 = 2,25 : (0,1 . x)
b) 8 : \(\left(\frac{1}{4}.x\right)\) = 2 : 0,02
c) 3 : \(2\frac{1}{4}\) = \(\frac{3}{4}\) : (6 . x)
a)4,5:0,3=2,25:(0,1.x)
2,25:(0,1.x)=15
0,1.x=0,15
x=0,15:0,1
x=1,5
Vậy x=1,5
b)8:\(\left(\frac{1}{4}.x\right)\)=2:0,02
8:\(\left(\frac{1}{4}.x\right)\)=100
\(\left(\frac{1}{4}.x\right)\)=\(\frac{8}{100}\)
x=\(\frac{8}{100}\):\(\frac{1}{4}\)
x=\(\frac{8}{25}\)
Vậy x=\(\frac{8}{25}\)
c)\(3:2\frac{1}{4}=\frac{3}{4}:\left(6.x\right)\)
\(\frac{3}{4}:\left(6.x\right)=\frac{4}{3}\)
6.x=\(\frac{3}{4}:\frac{4}{3}\)
6.x=\(\frac{9}{16}\)
x=\(\frac{9}{16}\):6
x=\(\frac{3}{32}\)
Vậy x=\(\frac{3}{32}\)
a.
\(4,5\div0,3=2,25\div\left(0,1\times x\right)\)
\(2,25\div\left(0,1\times x\right)=15\)
\(0,1\times x=\frac{2,25}{15}\)
\(0,1\times x=0,15\)
\(x=\frac{0,15}{0,1}\)
\(x=1,5\)
b.
\(8\div\left(\frac{1}{4}\times x\right)=2\div0,02\)
\(8\div\left(\frac{1}{4}\times x\right)=100\)
\(\frac{1}{4}\times x=\frac{8}{100}\)
\(\frac{1}{4}\times x=\frac{2}{25}\)
\(x=\frac{2}{25}\div\frac{1}{4}\)
\(x=\frac{2}{25}\times4\)
\(x=\frac{8}{25}\)
c.
\(3\div2^1_4=\frac{3}{4}\div\left(6\times x\right)\)
\(\frac{3}{4}\div\left(6\times x\right)=3\div2,25\)
\(\frac{3}{4}\div\left(6\times x\right)=\frac{4}{3}\)
\(6\times x=\frac{3}{4}\div\frac{4}{3}\)
\(6\times x=\frac{3}{4}\times\frac{3}{4}\)
\(6\times x=\frac{9}{16}\)
\(x=\frac{9}{16}\div6\)
\(x=\frac{9}{16}\times\frac{1}{6}\)
\(x=\frac{3}{32}\)
Tìm x, biết:
a)\(x - \left( { - \frac{7}{9}} \right) = - \frac{5}{6}\);
b)\(\frac{{15}}{{ - 4}} - x = 0,3\).
a)
\(\begin{array}{l}x - \left( { - \frac{7}{9}} \right) = - \frac{5}{6}\\x + \frac{7}{9} = - \frac{5}{6}\\x = - \frac{5}{6} - \frac{7}{9}\\x = - \frac{{15}}{{18}} - \frac{{14}}{{18}}\\x = \frac{{ - 29}}{{18}}\end{array}\)
Vậy \(x = \frac{{ - 29}}{{18}}\).
b)
\(\begin{array}{l}\frac{{15}}{{ - 4}} - x = 0,3\\x = \frac{{15}}{{ - 4}} - 0,3\\x = - 3,75 - 0,3\\x = - 4,05\end{array}\)
Vậy \(x = - 4,05\).
1. tìm x trong các tỉ lệ thức sau:
a. \(\left(\frac{1}{3}.x\right):\frac{2}{3}=1\frac{3}{4}:2\)
b. 4,5:0,3 = 2,25:(0,1.x)
c. 8:\(\left(\frac{1}{4}.x\right)=2:0,02\)
c. \(3:2\frac{1}{4}=\frac{3}{4}:\left(6:x\right)\)
2. tìm hai số x,y,z biết rằng
\(\frac{x}{2}=\frac{y}{3},\frac{y}{4}=\frac{z}{5}\) và x+y-z=10
\(4\frac{1}{3}:\frac{x}{4}=6:0,3\)
\(\frac{13}{3}:\frac{x}{4}=6:0,3\)
\(\frac{13}{3}:\frac{x}{4}=20\)
\(\frac{x}{4}=\frac{13}{3}:20\)
\(\frac{x}{4}=\frac{13}{3.20}\)
\(\frac{x}{4}=\frac{13}{60}\)
\(60x=13.4\)
\(60x=52\)
\(x=\frac{52}{60}\)
\(x=\frac{13}{15}\)
Vậy \(x=\frac{13}{15}\)