Tìm x biết:
x+x/3+x/2+3/4=5/3
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a, Xét \(\dfrac{x}{-5}=2\Rightarrow x=-10\)
\(\dfrac{y}{4}=2\Leftrightarrow y=8\)
b, \(xy=6\Rightarrow x;y\inƯ\left(6\right)=\left\{\pm1;\pm2;\pm3;\pm6\right\}\)
x | 1 | -1 | 2 | -2 | 3 | -3 | 6 | -6 |
y | 6 | -6 | 3 | -3 | 2 | -2 | 1 | -1 |
\(\Rightarrow x+\frac{1}{2}+x+\frac{1}{3}+x+\frac{1}{4}+x+\frac{1}{5}-x+\frac{1}{6}=0\)
\(\Rightarrow3x+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{1}{6}\)
k cho minh
\(x+\frac{1}{2}+x+\frac{1}{3}+x+\frac{1}{4}+x+\frac{1}{5}=x+\frac{1}{6}\)
\(\Leftrightarrow x+\frac{1}{2}+x+\frac{1}{3}+x+\frac{1}{4}+x+\frac{1}{5}-x-\frac{1}{6}=0\)
\(\Leftrightarrow3x+\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+\frac{1}{5}-\frac{1}{6}=0\)
Tính ra nhé !
`x-(5/6 -x) =x-2/3`
`x-5/6 +x -x+2/3 =0`
`x = 5/6-2/3 = 5/6 -4/6 = 1/6`
X + 1+2+3+4+5-6-7-8-9=1-2-3-4-5+6+7+8+9
X+ (-15) = 17
X = 17-(-15)
X = 32
vậy x = 32
tk nha
\(x+\frac{x}{3}+\frac{x}{2}+\frac{3}{4}=\frac{5}{3}\)
\(\Rightarrow x+\frac{x}{3}+\frac{x}{2}=\frac{5}{3}-\frac{3}{4}=\frac{11}{12}\)
\(\Rightarrow x\left(1+\frac{1}{3}+\frac{1}{2}\right)=\frac{11}{12}\)
\(\Rightarrow x.\frac{11}{6}=\frac{11}{12}\)
\(\Rightarrow x=\frac{11}{12}:\frac{11}{6}=\frac{11}{12}.\frac{6}{11}\)
\(\Rightarrow x=\frac{1}{2}\)
x + \(\frac{x}{3}\)+\(\frac{x}{2}\)+ \(\frac{3}{4}\)=\(\frac{5}{3}\)
x*1+ x*\(\frac{1}{3}\)+x*\(\frac{1}{2}\) = \(\frac{5}{3}-\frac{3}{4}\)
x *( 1+\(\frac{1}{3}\)+\(\frac{1}{2}\)) = \(\frac{11}{12}\)
x* \(\frac{11}{6}\) = \(\frac{11}{12}\)
x = \(\frac{11}{12}:\frac{11}{6}\)
x = \(\frac{1}{2}\)
Vậy \(x=\frac{1}{2}\)