Question

- (2,77 - 7$frac{2}{9}$) - (0,23 - 4$frac{7}{9}$)

Answer 1

-(2,77-7 2/9)-(0,23-4  7/9)=-2,77+7 2/9 -0,23+4  7/9=
=(-2,77-0,23)+(7 2/9+4  7/9)=-3+12=9