Question

помагите сделать 2 и 4 пожалуйста!!!!

Answer 1

$2)( - 2 frac{2}{3} - 2 frac{4}{21}) div frac{17}{21} + 5.1 = frac{ - 102}{21} times frac{21}{17} + 5.1 = - 6 + 5.1 = - 0.9 \ 4)7.6 div ( - 1 frac{4}{15}) - ( - 9.75 div 1 frac{1}{12}) = frac{38}{5} times frac{ - 15}{19} - ( frac{ - 39}{4} times frac{12}{13} ) = - 6 - ( - 9) = - 6 + 9 = 3$