Question

Выполните действия:1,5-2 1/12*(1 2/3+1/5)

Answer 1

3/2-21/12(4+1/5)=3/2-21/12*21/5=(180-2(21*21))/60=(3²-2.1²)/3=0.9*5.1/3=1.53

Answer 2

$1,5-2 frac{1}{12} (1 frac{2}{3} + frac{1}{5} )=1,5-2 frac{1}{12} (1 frac{10}{15} + frac{3}{15} )= \ 1,5-2 frac{1}{12} *1 frac{13}{15} =1,5- frac{25}{12} * frac{28}{15} =1,5-3 frac{8}{9} = \ 1 frac{9}{18} -3 frac{16}{18} =-2 frac{7}{18}$