Question

a) What number must be added to each of the numbers 5, 9, 7,
12 to get the numbers which are in proportion?व्हाट नंबर बस भी एडिट टू ईच ऑफ द नंबर 5 कोमा 7 कोमा 7 कोमा टू गेट द नंबर्स विच ऑल इनफॉरमेशन ​

Answer 1

Answer:

The number that should be added is 3

Step-by-step explanation:

Let the number added be x

ATP,

5 + x / 9 + x = 7 + x / 12 + x

(5 + x)(12 + x) = (7 + x)(9 + x)

60 + 5x + 12x + x² = 63 + 7x + 9x + x²

60 - 63 + 17x - 16x = 0

- 3 + x = 0

x = 3.