Question

упростите выражения 4/9(1 1/2с-3/8)-(1 5/6 - 1 1/3с)

Answer 1

$frac{4}{9}*( 1frac{1}{2}c- frac{3}{8})-(1 frac{5}{6}- 1frac{1}{3}c)= frac{12}{18} c- frac{12}{72}-1 frac{5}{6}+ 1frac{1}{3}c= 2c-1 frac{2}{3}$
1) $frac{12}{18}c+ frac{4}{3}c= frac{12+24}{18}c = frac{16}{18}c=2c$
2) $- frac{12}{72}-1 frac{5}{6}= -frac{12}{72}- frac{11}{6} = frac{-12-132}{72} = frac{120}{72}= frac{60}{36}= frac{10}{6}= frac{5}{3}=1 frac{2}{3}$