Question

Упростите вырожения -2/5(15а+1/2b)+1/5b
4 2/5(3/11-a)-1 1/5

Answer 1

$- frac{2}{5} (15a+ frac{1}{2}b)+ frac{1}{5}b = -6a$
$4 frac{2}{5} ( frac{3}{11}-a )- frac{11}{5} = frac{11}{5}(- frac{5}{11}-2a )$