Question

как решить
3,8*(-2 3/4)+13 3/5:1,7
(4,3-7,85):7,1

Answer 1

$1) frac{38}{10} *( -frac{11}{4} )+ frac{68}{5} * frac{10}{17} = frac{-38*11}{10*4} + frac{68*10}{5*17} = frac{-209+80}{20} =- frac{129}{20} =-6 frac{9}{20} \ 2) ( frac{43}{10}- frac{785}{100} ): frac{71}{10} = frac{86-157}{20} * frac{10}{71} =-2$