\(A=\dfrac{2}{\dfrac{3}{5}}+1=\dfrac{10}{3}+1=\dfrac{13}{3}\)
Để A=\(\dfrac{3}{5}\) , giá trị của x là :
\(\dfrac{2}{x+1}=\dfrac{3}{5}\)
\(\Rightarrow3\left(x+1\right)=2\cdot5\)
\(3x+3=10\)
\(3x=10-3\)
\(3x=7\)
\(x=\dfrac{7}{3}\)
2/x + 1 = 3/5
2/x = 3/5 - 1
2/x = -2/5
2/x = 2/-5
Vậy x = -5
Chúc bạn học tốt!
\(A=\dfrac{2}{x+1}\)
\(A+\dfrac{3}{5}\)
\(\Leftrightarrow\dfrac{3}{5}=\dfrac{2}{x+1}\)
\(\Leftrightarrow3\left(x+1\right)=10\)
\(\Leftrightarrow3x+3=10\)
\(\Leftrightarrow3x=7\)
\(\Leftrightarrow x=\dfrac{7}{3}\)
