Question

Решите подробно: 5+4 целых 1/5 • (-1 4/7)= -5⅔: 4¼-5⅓: ⅞= 2 3/5 • 7/11+4 2/11: (-5¾)=

Answer 1

Пошаговое объяснение:

5+4 целых 1/5 • (-1 4/7)=-1 3/5

4 1/5*(-1 4/7)=21/5*(-11/7)=-33/5=-6 3/5

5+(-6 3/5)=-1 3/5

-5⅔:4¼-5⅓:⅞=-7 3/7

-5 2/3:4 1/4=-17/3*4/17=-4/3=-1 1/3

5 1/3:7/8=16/3*8/7=128/21=6 2/21

-1 1/3-6 2/21=-1 7/21-6 2/21=-7 9/21=-7 3/7

2 3/5 • 7/11+4 2/11:(-5¾)=51/55

2 3/5*7/11=13/5*7/11=91/55=1 36/55

4 2/11:(-5 3/4)=46/11*(-4/23)=-8/11

1 36/55+(-8/11)=1 36/55-40/55=1-4/55=51/55

Answer 2

$1)-1.6;\\\\2) -7\displaystyle\frac{3}{7}; \\\\3) \frac{51}{55}$

Пошаговое объяснение:

$First) 5+4\displaystyle\frac{1}{5} *(-1\frac{4}{7} )= 5+\frac{21}{5} *(-\frac{11}{7} )=\\\\\\=5-\frac{3*11}{5}=5-\frac{33}{5}=\frac{25-33}{5} =\frac{-8}{5} =\\\\=-1.6$

$Second)-5\displaystyle\frac{2}{3} :4\frac{1}{4} -5\frac{1}{3} :\frac{7}{8}\\\\\\ 1)-5 \frac{2}{3} :4\frac{1}{4}=\frac{-17}{3} :\frac{17}{4} =\frac{-17}{3} *\frac{4}{17}=-\frac{4}{3} \\\\\\2) 5\frac{1}{3}:\frac{7}{8} =\frac{16}{3} *\frac{8}{7} =\frac{128}{21} \\\\\\3) -\frac{4}{3} -\frac{128}{21} =-\frac{28-128}{21} =-\frac{156}{21} =-7\frac{9}{21} = -7\frac{3}{7}$

$Third)2\displaystyle\frac{3}{5} *\frac{7}{11} +4\frac{2}{11} :(-5\frac{3}{4} )\\\\\\1) 2\frac{3}{5} *\frac{7}{11} =\frac{13}{5} *\frac{7}{11} =\frac{91}{55} \\\\\\2) 4\frac{2}{11} :(-5\frac{3}{4} )=\frac{46}{11} *(-\frac{4}{23}) =-\frac{2*4}{11} =-\frac{8}{11} \\\\\\3) \frac{91}{55} -\frac{8}{11} =\frac{91-40}{55} =\frac{51}{55}$