Question

Посогите пажалуйства зделайте нормально срочно1¹!!!!!

Answer 1

$\frac{8}{13} *\frac{3}{8} =\frac{1*3}{13*1} =\frac{3}{13} \\\\\frac{8}{9} *1\frac{1}{2} =\frac{8}{9} *\frac{3}{2} =\frac{8*3}{9*2} =\frac{4*1}{3*1} =\frac{4}{3}=1\frac{1}{3} \\\\\frac{9}{20}*2=\frac{9*2}{20} =\frac{9*1}{10}=\frac{9}{10} \\\\2\frac{1}{3} *\frac{3}{7}=\frac{7*3}{3*7} =\frac{1}{1} =1\\\\2\frac{2}{5} *1\frac{2}{3} =\frac{12}{5} *\frac{5}{3} =\frac{12*5}{5*3} =\frac{12*1}{1*3} =\frac{12}{3}=4$$3*5\frac{1}{2} =\frac{1}{3}*\frac{11}{2}=\frac{2}{6} *\frac{33}{6}=\frac{1*33}{6*3} =\frac{33}{18} =1\frac{15}{18}$