Question

21 3/8+(-51 1/4)
-65 2/5+103
-34.528+78.12
863.78+(-1024.01)

Answer 1

`21(3)/(8) +(-51(1)/(4) )=21(3)/(8) -51(1)/(4) =-(39)/(8)`

`-65(2)/(5) +103=77`

`-34.528+78.12=43.592`

`863.78+(-1024.01)=863.78-1024.01=-160.23`