Question

2/x +3/y =11, 5/x -4/y =-7 hence find the value of 5x-3y
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Answer 1

Answer:

this is simultaneous equation

Step-by-step explanation:

multiply eq 1 by 4 and eq2 by 3 and then add or subtract both the equation your answer will come.............

plz mark it as brainlist

Answer 2

The required value is 4.

Step-by-step explanation:

Since we have given that

$\dfrac{2}{x}+\dfrac{3}{y}=11\\\\\dfrac{5}{x}-\dfrac{4}{y}=-7$

Let,

$\dfrac{1}{x}=u\\\\\dfrac{1}{y}=v$

So, it becomes,

$2u+3v=11\\\\5u-4v=-7$

So, we get that

$u=1,v=3$

$\dfrac{1}{x}=1\\\\x=1\\\\\dfrac{1}{y}=3\\\\y=\dfrac{1}{3}$

So, it becomes,

$5x-3y=5-3\times \dfrac{1}{3}=5-1=4$

Hence, the required value is 4.

# learn more:

Solve the pair of equations :

2/x + 3/y = 11 , 5/x - 4/y = -7

Hence, find the value of 5x - 3y.​

https://brainly.in/question/15931429