Question

2. Solve by comparison method :
xy/x+y=1/5
xy/x-y=1/9​

Answer 1

Answer:

The FitnessGram™ Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear this signal. [beep] A single lap should be completed each time you hear this sound. [ding] Remember to run in a straight line, and run as long as possible. The second time you fail to complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.

Step-by-step explanation:

FitnessGram™起搏器测试是一个多阶段有氧能力测试，随着测试的进行逐渐变得越来越困难。 20米起搏器测试将在30秒内开始。开始时要排队。运行速度开始缓慢，但在听到此信号后每分钟会加快。 [哔声]每次听到此声音时，都应完成一个圈。 [ding]记住要一直走，并且要尽可能长地跑。第二次您未能在发声之前完成一圈，则测试结束。测试将从单词start开始。做好准备，开始。

Answer 2

Answer:

5xy is equal to x+y

9xy is equal to x-y

from 2nd

x is equal to 9xy+y put the value of x in 1st equation