Respuesta :

Rob, 16 crayons

Troy. 8 crayons

Ella. N crayons

Rob crayons = 16 -8 + N

then

17 = 16 - 8 + N

now find N

N = 17 - 16 + 8 = 9

THEN answer is Ella give 9 CRAYONS TO ROB

RELAXING NOICE
Relax