Ayuda[tex] \ frac{1}{2} + \ frac{5}{2} = [ / tex][tex] \ frac{10}{7} - \ frac{3}{7} = [ / tex][tex] \ frac{2}{13} + \ frac{8}{13} - \ frac{4}{13} = [ / tex]?
Ayuda [tex] \ frac{1}{2} + \ frac{5}{2} = [ / tex] [tex] \ frac{10}{7} - \ frac{3}{7} = [ / tex] [tex] \ frac{2}{13} + \ frac{8}{13} - \ frac{4}{13} = [ / tex].