Respuesta :

Answer:

63/3 or 31.5

Step-by-step explanation:

use the formula A(B-C) +B(C-A)+C(A-B) /2

Then you will substitute the values

-7(0+3) +5(-3-3)-4(3-0)/2

Do the algebra = 63/3 or 31.5

hope that helped cheers