Michal 7323

Uncle Josef is three times as old as Michal. Twelve years ago, Josef was nine times older than Michal. How old are they now?

Correct answer:

j =  48
m =  16

Step-by-step explanation:


j = 3 · m
j-12 = 9·(m-12)

j-3m = 0
j-9m = -96

Row 2 - Row 1 → Row 2
j-3m = 0
-6m = -96


m = -96/-6 = 16
j = 0+3m = 0+3 · 16 = 48

j = 48
m = 16

Our linear equations calculator calculates it.



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