Respuesta :

nealraina

Answer:

for A    n=6

for B    x= 3.5

Step-by-step explanation:

A. so if you know what one thing is (10)then you sub them 28-10=18 now do 18/3 which is 6

b. same think but you do 7/2 which is 3.5

HOPE THIS HELPED!!!!!!!! :)