Question

5/7a +3/14a при a=4 2/3; 7/13

Answer 1

$(frac{5}{7} + frac{3}{14} )a = frac{10 + 3}{14} a = frac{13}{14} a = frac{13}{14} times frac{14}{3} = frac{13}{3} = 4 frac{1}{3} \ frac{13}{14} times frac{7}{13} = frac{1}{2}$