Question

4245:(23+815)-1:(3-1 ,15)

Answer 1

$frac{42}{45} : (frac{2}{3} + frac{8}{15} )- frac{1}{3-1 frac{1}{5} } =frac{42}{45} : frac{2*5+8}{15} - frac{1}{3- frac{6}{5} } =frac{42}{45} : frac{18}{15} - frac{1}{ frac{15-6}{5} } =$$frac{42*15}{45*18} - frac{5}{9 } =frac{7}{3*3} - frac{5}{9 } =frac{7}{} - frac{5}{9 } = frac{7-5}{9} =frac{2}{9}$