Question

a+(-0,6+7/12) при a=1/15, 6,4+(-3.3/6+a) при a=4/15?

Answer 1

$a+(-0,6+ frac{7}{12}) \ 1)-0,6+ frac{7}{12}=- frac{3}{5}+ frac{7}{12}= frac{-36+35}{60}=- frac{1}{60} \ 2)a- frac{1}{60}= frac{1}{15}- frac{1}{60}= frac{4-1}{60}= frac{3}{60}= frac{1}{20}=0,05 \ \ 6,4+(-3 frac{3}{6}+a)=6,4-3 frac{3}{6}+a \ 1)6,4-3 frac{3}{6}= frac{64}{10}- frac{21}{6}= frac{192-105}{30}= frac{87}{30}= frac{29}{10} \ 2) frac{29}{10}+a= frac{29}{10}+ frac{4}{15}= frac{87+8}{30}= frac{95}{30}= frac{19}{6}=3 frac{1}{6}$