Question

(1цел,18/25-9,12-7,4(-6цел1/3))/5цел1/3

Answer 1

$(1 frac{18}{25} -9,12-7,4(-6 frac{1}{3} ))/5 frac{1}{3}$
По действиям:
1⇒$7,4(-6 frac{1}{3} )=7 frac{4}{10}* (-6 frac{1}{3} )=- frac{74*19}{10*3} =- frac{1406}{30} =- frac{703}{15}$
2⇒$1 frac{18}{25} -9,12=1 frac{18}{25}-9 frac{12}{100} = frac{43}{25}- frac{912}{100}= frac{172-912}{100}=- frac{740}{100} = -frac{74}{10}$
3⇒$-frac{74}{10}-(- frac{703}{15})=-frac{74}{10}+ frac{703}{15}= frac{-222+1406}{30}= frac{1184}{30}= frac{592}{15}$
4⇒$frac{592}{15}:5 frac{1}{3}= frac{592}{15}: frac{16}{3}= frac{592*3}{15*16}= frac{37}{5}=7,4$