Question 994196
Aaron is 2years less than,3 times the age of sarah.In 6years Aaron will be twice sarah age.find the age of each now. 
Equations:
a = 3s-2
a+6 = 2(s+6)
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Substitute for "a" and solve for "s"::
3s-2+6 = 2s+12
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3s+4 = 2s+12
s = 8 yrs (sarah's age now)
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Solve for "a":
a = 3s-2
a = 3*8-2
a = 22 yrs (aaron's age now)
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Cheers,
Stan H.