Question

5/x+3/y=30 , 9/x-5/y=2​

Answer 1

Answer:

x=1/5;y=1/3

Step-by-step explanation:

let 1/x=u & 1/y=v. then

5u+3v=30--(1)

9u-5v=2---(2)

5u=30-3v

u=30-3v/5

put this in eq ( 2)

9(30-3v/5)-5v=2

270-27v-25v=2×5

270-10=52v

v=260/52

v=5

5u=30-3(5)

u=15/5

u=3

v=1/x

x=1/v

x=1/5----------@

u=1/y

y=1/u

y=1/3

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