Jane is twice a old as Joel. If their ages total 63, how old is Joel?
Joel = j
Jane = 2j
j + 2j = 63
3j = 63
Divide each side by 3:
3j/3 = 63/j
Cancel the 3's on the left side:
j = 21
Joel = j
Jane = 2j
j + 2j = 63
3j = 63
Divide each side by 3:
3j/3 = 63/j
Cancel the 3's on the left side:
j = 21