Question

найдите произведения
г)17/13*26/51*8/9
д)8*9/16*7/12
е)4/9*9/8*10/17
ж)9/20*5/8*4/15
з)11/36*2/55*18
и)21/22*12*33/56

Answer 1

Ответ:

Пошаговое объяснение:

г)17/13*26/51*8/9

$\frac{17}{13} *\frac{26}{51} *\frac{8}{9} =\frac{17}{13} *\frac{2*13}{3*17} *\frac{8}{9} =\frac{2*8}{3*9}=\frac{16}{27}$

д)8*9/16*7/12

$\frac{8*9}{16} *\frac{7}{12} =\frac{8*3*3}{2*8} *\frac{7}{3*4} =\frac{3*7}{2*4} =\frac{21}{8}=2.625$

е)4/9*9/8*10/17

$\frac{4}{9} *\frac{9}{8} *\frac{10}{17} =\frac{4}{9} *\frac{9}{2*4} *\frac{2*5}{17} =\frac{5}{17}$

ж)9/20*5/8*4/15

$\frac{9}{20} *\frac{5}{8} *\frac{4}{15}=\frac{3*3}{4*5} *\frac{5}{2*4} *\frac{4}{3*5}=\frac{3}{4*2*5}= \frac{3}{40} =0.075$

з)11/36*2/55*18

$\frac{11}{36}*\frac{2}{55} *18= \frac{11}{2*18}*\frac{2}{5*11} *18=\frac{1}{5}=0.2$

и)21/22*12*33/56

$\frac{21}{22}*12*\frac{33}{56}=\frac{3*7}{2*11}*3*4*\frac{3*11}{4*2*7}=\frac{3*3*3}{2*2} =\frac{27}{4}=6.75$