Question

Помогите плиз срочно))

Answer 1

$1frac{11}{27}+2frac{1}{6}+(-1frac{5}{18})+(-3frac{4}{9})=frac{38}{27}+frac{13}{6}-frac{23}{18}-frac{31}{9}=$

$=frac{38}{27}+frac{39}{18}-frac{23}{18}-frac{93}{27}=-frac{55}{27}+frac{16}{18}=-frac{55}{3*9}+frac{16}{2*9}=frac{48-110}{3*9*2}=$ 

$=-frac{62}{3*9*2}=-frac{31}{27}=-1frac{4}{27}$