Write an algebraic expression in simplest form. use x for each unknown number.
q: the difference between a father's age and his son's age if the father's age is three times his son age.

Y=X3 Because the Y is how old the dad is so you multiply how old the son is which is x by 3. hope this helped:(

X is father's age
x is son's age
confusion ensures because x=x but son's age≠father's age

lets start again

f=father's age
s=son's age

difference between father and son
if father =3 times son
f=3s

f-s=3s-s=2s

if we wanted x as the variable
2s, 2x

answer is 2x if x is the son's age

The solution to the system of equations (-2,2)