N. 377

Question

-(-7/4+3/2-1/4)×(-5/6-2/3)-(-6/8+18/4)=

gramor · Accepted Answer

$- big (- frac {7}{4}+ frac {3}{2}- frac {1}{4} big )· big (- frac {5}{6}- frac {2}{3} big )- big (- frac {6}{8}+ frac {18}{4} big )$= =$- big ( frac {-7+6-1}{4} big )· big ( frac {-5-4}{6} big )- big (- frac {3}{4}+ frac {9}{2} big )$= =$- big (- frac {2}{4} big )· big (- frac {9}{6} big )- big ( frac {-3+18}{4} big )$= =$- big (- frac {1}{2} big )· big (- frac {3}{2} big )- frac {15}{4}= =$- big (+ frac {3}{4} big )- frac {15}{4}= =$- frac {3}{4}- frac {15}{4}= =$- frac {18}{4}= =$- frac {9}{2}

N. 377

Domande