Question 1101310
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Sammy  +  mom     = 42

S      +  M       = 42

S      + (3S + 2) = 42  ====>


4S + 2 = 42  ====>  4S = 42-2 = 40  ====>  S = {{{40/4}}} = 10.


<U>Answer</U>.  Sammy is 10 years old.  Her mom is 42 - 10 = 32 years old.
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