Tolong di bantu kk pake cara y makasih

Tolong di bantu kk pake cara y makasih

Jawaban:

$3a). : frac{6}{7} times 2.5 = frac{6}{7} times frac{5}{2} \ = frac{30}{14} = frac{15}{7} = 2 frac{1}{2} \ 3b). : frac{3}{4} times 1.5 = frac{3}{4} times frac{3}{2} = frac{9}{8} = 1 frac{1}{8} \ 3c). : frac{2}{3} times frac{9}{2} = frac{18}{6} = 3 \ 3d). : 1.5 times frac{2}{3} = frac{3}{2} times frac{2}{3} = frac{6}{6} = 1 \ \ 4a). : 2.5 div frac{10}{12} = frac{5}{2} div frac{5}{6} \ = frac{5}{2} times frac{6}{5} = frac{30}{10} = 3 \ 4b). : 0.25 div frac{2}{4} = frac{1}{4} div frac{1}{2} \ = frac{1}{4} times frac{2}{1} = frac{2}{4} = frac{1}{2} \ 4c). : frac{2}{3} div 0.6 = frac{2}{3} div frac{3}{5} \ = frac{2}{3} times frac{5}{3} = frac{10}{9} = 1 frac{1}{9} \ 4d). : 2.5 div frac{3}{4} = frac{5}{2} times frac{4}{3} \ = frac{20}{6} = 3 frac{2}{6} = 3 frac{1}{3} \ \ 5). : 4 frac{1}{4} + frac{1}{2} = frac{17}{4} + frac{1}{2} \ = frac{17 + 2}{4} = frac{19}{4} = 4 frac{5}{4} m \ \ 6). : 5 frac{3}{4} + frac{2}{5} = frac{23}{4} + frac{2}{5} \ = frac{115 + 8}{20} = frac{123}{20} = 6 frac{3}{20} kg$