Question

-8+4целых 3/7+2целых 11/21= -1целая 1/21

Answer 1

4 3/7=(28+3)/7=31/7
2 11/21=(42+11)/21=53/21
1)31/7+53/21=(31*3+53)/21=146/21
2)146/21-8=146/21-168/21=-22/21=-1цел 1/21