Respuesta :
(X+y)/3 = 5
(X+y) = 15
X = 15 - y
You can check by substituting the expression back into the original function and see whether or not the final value will still be the same.
(X+y) = 15
X = 15 - y
You can check by substituting the expression back into the original function and see whether or not the final value will still be the same.