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Easy Math equation

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My equations:
With A being Mr. A's age and L being the age of Lukas

A = 4*L

A-2 = 6*(L-3)
A = 6*(L-3)+2

4*L = 6*(L-3)+2
4*L = 6*L-18+2
2*L = 3*L-8
L = 8

8 is correct
 
Level 26
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it should be:
x=4y
x-2=6(y-5)
if I understand the last part correctly.

I just made it via testing and found out that the man is 56 and Lukas is 14.

Proof:

56=4x14
56-2=6(14-5)
->54=6x9

Edit: ok it just seems that I understood this task a bit wrong :p
 
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fladdermasken

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:thumbs_up: THAT'S THE POWER OF MATH KIDS!
Power of Logic
macgyver.jpg
 
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