Question

Срочно надо... Спасибо:)

Answer 1

а)3 2/3*3=3*3+2/3*3=9+2=11
б)(5/8+2 1/2)*4=5/8*4+5/2*4=2 1/2+10=2,5*10=12,5
в)4 7/9*3/11-3 5/9*3/11=3/11*(4 7/9+3 5/9)=
3/11*7 12/9=3/11*8 1/3=3/11*25/3=25/11=
2 3/11
г)3 2/9*3/5+3/5*6 7/9=3/5*(3 2/9+6 7/9)=
3/5*9 9/9=3/5*10=6