Question

Verify :[-x-(-y) ]-z=-X-[-Y-(-Z) ]: X=-21, y=30, z=-41

Answer 1

Step-by-step explanation:

{-21- (-30)}-(-41)= -21-{-30-(-41)}

-21+30+41=-21+30+41

-21+71=-21+71

51=51

hence verified