\(\frac{15}{26}+\frac{x}{13}=\frac{46}{32}\)
\(\frac{x}{13}=\frac{46}{32}-\frac{15}{26}\)
\(\frac{x}{13}=\frac{1196}{832}-\frac{480}{832}\)
\(\frac{x}{13}=\frac{716}{832}\)
\(\frac{x}{13}=\frac{179}{208}\)
\(\frac{x}{13.16}=\frac{179}{208}\)
\(\frac{x}{208}=\frac{179}{208}\)
\(x=179\)
chú ý: dấu "." là dấu nhân
ko mình nha