Antennas

If you give me two antennas, it will be the same. If you give me again your two antennas, I have 5× so many more than you. How many antennas have both men?

Correct answer:

x =  1
y =  5

Step-by-step explanation:


x+2 = y-2
x+2+2 = 5 (y-2-2)

x+2 = y-2
x+2+2 = 5·(y-2-2)

x-y = -4
x-5y = -24

Row 2 - Row 1 → Row 2
x-y = -4
-4y = -20


y = -20/-4 = 5
x = -4+y = -4+5 = 1

x = 1
y = 5

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