Question 1181856
Harry's age now = H
Louis's age now = L
<pr>
H = 3(L - (H - L))
L + (H - L) + H + (H - L) = 28
<pr>
H = 3(L - H + L)
3H - L = 28
<pr>
H = 3(2L - H)
3H - L = 28
<pr>
H = 6L - 3H
3H - L = 28
<pr>
4H - 6L = 0
3H - L = 28
<pr>
4H - 6L = 0
-6(3H - L) = -6(28)
<pr>
4H - 6L = 0
-18H + 6L = -168
<pr>
-14H = -168
<pr>
H = 12
<pr>
4H - 6L = 0
4(12) - 6L = 0
48 - 6L = 0
-6L = -48
L = 8
<pr>
Harry's age now = H = <b>12</b>
Louis's age now = L = <b>8</b>