Question

Пожалуйста!Дам много баллов

Answer 1

-10/11÷4/5=-10/11×5/4=8/11

Answer 2

$frac{6}{12}*frac{3}{8} = frac{12*9}{24} = frac{108}{24}=4,5$

$frac{5}{6} :frac{9}{10} =frac{5}{6} *frac{9}{10} =frac{25*27}{30} =frac{675}{30} = 22,5$

$frac{5}{9} *frac{6}{7} = frac{35*54}{63} =frac{1890}{63} =30$

$-frac{10}{11} :frac{4}{5} =-frac{10}{11} *frac{5}{4} = -frac{4*55}{44} =-frac{220}{44} =-5$

$-frac{5}{9} +(-6frac{5}{9} )=-(6frac{5}{9}+frac{5}{9})=-6frac{10}{9}=-7frac{1}{9}$

$frac{46}{35} +(-2frac{23}{35})=frac{46}{35} -frac{2*35+23}{35} =frac{46}{35} -frac{93}{35} =frac{46-93}{35} =-frac{47}{35} =-1frac{12}{35}$

$-frac{45}{376} +frac{40}{47} =-frac{45}{376} +frac{40*8}{376} =frac{-45+320}{376}=frac{275}{376}$

$-frac{565}{2507} +frac{844}{2507} =frac{844-565}{2507}=frac{279}{2507}$