#)Giải :
\(\frac{17}{15}+x=\frac{5}{11}+\frac{17}{11}\)
\(\frac{17}{15}+x=2\)
\(\Rightarrow x=\frac{13}{15}\)
\(\frac{17}{15}+x=\frac{5}{11}+\frac{17}{11}\)
\(\Rightarrow\frac{17}{15}+x=2\left(\frac{5}{11}+\frac{17}{11}=\frac{22}{11}=2\right)\)
\(\Rightarrow x=2-\frac{17}{15}\)
\(\Rightarrow x=\frac{30}{15}-\frac{17}{15}\)
\(\Rightarrow x=\frac{13}{15}\)
Ta có : \(\frac{17}{15}+x=\frac{5}{11}+\frac{17}{11}\)
\(\Leftrightarrow\frac{17}{15}+x=\frac{22}{11}\)
\(\Leftrightarrow\frac{17}{15}+x=2\)
\(\Leftrightarrow x=2-\frac{17}{15}\)
\(\Leftrightarrow x=2-\frac{17}{15}\)
\(\Leftrightarrow x=\frac{13}{15}\)
(2/7 + 4/9) x X - 5/7
= 0
giúp mình với mình dag vội!
