Respuesta :
Answer:
4 years old
Step-by-step explanation:
3x = x + 8
2x = 8
x = 4
Answer:
4 y/o
Step-by-step explanation:
x = age now
add 8 years
x+8 and this equals 3 times as old as he is now, or 3x
x+8 = 3x subtract 'x' from both sides
8 = 2x divide both sides by 2
x = 4 y/o
