Question

4/x+5y=7 and 3/x + 4y= 5 is​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Traking 1/x = u, the given equation become

$4u \: + 5y = ........(i)$

$3u + 4y = .........(ii)$

subtraction (ii) from (i) ,we get.

$4u + 5y - (3u + 4y) = 7 - 5$

$➣ \: u + y = 2$

$➣ \: u \: = 2 - y.......(iii)$

using (iii) in (i) ,

4(2-y) + 5y = 7

➣ 8-4y+ 5y = 7

➣ y = -1

putting y = -1 in (iii) , we find u

u = 2 - (-1)

➣ u = 3

➣ x = 1/4 = 1/3

Hence, the solution for the given system of equation is x = 1/3 and y = -1