<PRE><B>Question 1090966</B>
Armando 9 years ago was 2 x (Shantel - 9)
A + S = 72 
subtract S from both sides:
A = 72 - S
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A - 9 = 2(S-9)
A - 9 = 2S - 18 substitute for A:
72 - S - 9 = 2S - 18
63 - S = 2S - 18
81 = 3S flip it so we can get the unknown on the left:
3S = 81
S = 81/3
S = 27
A = 72-27 = 45

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