Question

найдите значение выражения: -(0,4)²:(1,4-1 3/7)

Answer 1

-(0,4)²:(1,4-1 3/7)=-0,16: (1 2/5-1 3/7)=-0,16: (1 14/35-1 15/35)=                      -0,16: (-1/35)=28/5=5,6

Answer 2

$-(0.4) ^{2} :(1.4-1 frac{3}{7} )= 5.6\ \ 1)-(0.4) ^{2} =-0.16=- frac{16}{100} \ \ 2) frac{14}{10} -1 frac{3}{7} =1 frac{4}{10} -1 frac{3}{7} =1 frac{28}{70} - 1frac{30}{70} =- frac{2}{70} \ \ 3)- frac{16}{100} :(- frac{2}{70} )= frac{16*70}{100*2} = frac{16*7}{10*2} = frac{8*7}{10} = frac{4*7}{5} = frac{28}{5} =5.6$