Question

(-2,5-1 5/6):1 4/9-3 5/9*(-2 1/4) вычислите

Answer 1

$(-2,5-1 frac{5}{6} ):1 frac{4}{9} -3 frac{5}{9} *(-2 frac{1}{4} )=(-2 frac{1}{2}-1 frac{5}{6} ):1 frac{4}{9} -3 frac{5}{9} *(-2 frac{1}{4})=$$=(-2 frac{3}{6}-1 frac{5}{6} ): frac{13}{9} - frac{32}{9} *(- frac{9}{4})= -4 frac{1}{3} * frac{9}{13} +8=- frac{13}{3} * frac{9}{13} +8=$ $-3+8=5$