Question

In an A.P if the a5 = 12 and a 12 = 5, find the Common difference.​

Answer 1

Answer:

a+4d=12

a+11d=5

—7d=7

d=—1

Answer 2

Finding common difference:

Step-by-step explanation:

$\ Given \ value:\\\\a5=12\\\\a12 = 5$

$\ Find: \\\\\ common \ difference \ d= ?$

$\ Solution: \\\\a+4d=12.....(1)\\\\a+11d=5...(2)\\\\\ subtract \ equation \ 2 \ from \ equation \ 1\\\\a+11d=5 \\a+4d=12\\\ subtract\\\\\ 7d=-7\\\\d=-\frac{7}{7}\\\\d=-1$

Learn more:

• Common difference: https://brainly.in/question/13238942