Question

номер 569 5 класс математика помогите

Answer 1

$1);9-frac23+6frac7{24}-2frac14=(9+6-2)+(-frac{16}{24}+frac7{24}-frac6{24})=\=13-frac{15}{24}=12frac{24}{24}-frac{15}{24}=12frac9{24}=12frac38\2);8frac{13}{30}+13frac45-5frac56+frac7{10}=(8+13-5)+(frac{13}{30}+frac{24}{30}-frac{25}{30}+frac{21}{30})=\=16+frac{33}{30}=16+1frac3{30}=17frac1{10}\3);17frac34-9frac1{32}+4frac38-5frac3{16}=(17-9+4-5)+(frac{24}{32}-frac1{32}+frac{12}{32}-frac6{32})=\=7+frac{29}{32}=7frac{29}{32}$
$4);21frac4{15}+1frac56-9frac7{30}+16frac7{24}=\=(21+1-9+16)+(frac{32}{120}+frac{100}{120}-frac{28}{120}+frac{35}{120})=29+frac{139}{120}=\=29+1frac{19}{120}=30frac{19}{120}$