Question

$2,48-3 frac{3}{4} -7 frac{1}{3} +3,52-5 frac{1}{4} +3 frac{7}{4} =$

Answer 1

$= (2,48+3,52)+(-3 frac{3}{4}-5 frac{1}{4}+4 frac{3}{4})-7 frac{1}{3}=6-4 frac{1}{4} -7 frac{1}{3}=$
=$-5 frac{1}{4}- frac{1}{3}=- frac{21}{4}- frac{1}{3}= -frac{63+4}{12}= -frac{67}{12}=-5 frac{7}{12}$