\(\frac{2}{5}+\frac{22}{15}x=\frac{23}{30}\)
\(\frac{22}{15}x=\frac{23}{30}-\frac{2}{5}\)
\(\frac{22}{15}x=\frac{23}{30}-\frac{12}{30}\)
\(\frac{22}{15}x=\frac{11}{30}\)
\(x=\frac{11}{30}:\frac{22}{15}\)
\(x=\frac{1}{4}\)
Vậy x = \(\frac{1}{4}\)
22/15x = 23/30 - 2/5
22/15x = 11/30
x= 11/30 : 22/15
x= 1/4