Các câu hỏi tương tự
\(\frac{3x+2}{5x+7}=\frac{0.5x+2}{x+3}timx\)
Timx: x+3|2x-1|=4
Tĩm,y,z: \(\hept{\begin{cases}\frac{3x-2y}{37}=\frac{5y-3z}{15}=\frac{2z-5x}{2}\\10x-3y-2z=-4\end{cases}}\)
Tính: \(\frac{1-5x-4x^2}{x^3+2x^2-x-2}-\frac{3x+1}{2-x-x^2}\)
1) So sanh
\(\frac{7}{\sqrt{1}}+\frac{7}{\sqrt{2}}+\frac{7}{\sqrt{3}}+...+\frac{7}{\sqrt{90}}+\frac{7}{\sqrt{100}}.\)va 70
2)Tinh
\(\frac{1}{x^2+3x+2}+\frac{2x}{x^3+4x^2+4x}+\frac{1}{x^2+5x+6}\)
a. \(\frac{2-x}{4}=\frac{x+1}{-3}\)
b. \(\frac{2-5x}{3}=\frac{-4x+1}{-5}\)
c. \(3\left(x-1\right)+4\left(5x+2\right)=3\)
d. \(\frac{1}{3}\left(2x-1\right)-4\left(5-2x\right)=\left(x+1\right)\)
Tìm x:
|5x-3|-3x=7
|x-3|+|x-5|-4x=-28
\(\left|x+2\right|+\left|x+\frac{3}{5}\right|+\left|x+\frac{1}{2}\right|=4x\)
\(\left|2x-1\right|+\left(4x^2-1\right)^2=0\)
a) \(\frac{-1}{3}-\frac{-3}{5}-\frac{1}{6}+\frac{1}{43}-\frac{-3}{7}+\frac{-1}{2}-\frac{1}{35}\)
b) \(5^x+5^{x+2}=650\)
c) \(\frac{1+3y}{12}=\frac{1+5y}{5x}=\frac{1+7y}{4x}\left(x\ne0\right)\)
Tim x
\(\frac{x-5}{5x-1}=\frac{y}{3}=\frac{4x-10}{20x+4}\)
\(\frac{5}{y}=\frac{3}{x}\)và y mũ 2 + x mũ 2 = 125
d,\(\frac{5x-4}{3-2x}=\frac{7+4x}{x+2}\)
e,\(\frac{x-1}{99}+\frac{x-2}{98}=\frac{x-3}{97}+\frac{x-4}{96}\)
mong cac bn giup