Question

4/x + 3/y = 7 and y/x - 3/y =5
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Answer 1

$\left\{\begin{array}{l}\cfrac{4}{x}+\cfrac{3}{y}=7 \\ \cfrac{y}{x}-\cfrac{3}{y}=5\end{array}\right.$

Answer 2

Step-by-step explanation:

This is based on a Grade 10 CBSE chapter - Linear Equations in 2 variables.

$\frac{4}{x}$ + $\frac{3}{y}$ = 7

$\frac{y}{x}$ -  $\frac{3}{y}$ = 5

Take $\frac{1}{x}$ = a and $\frac{1}{y}$ = b, then

4a + 3b = 7  ------- (1)

ya - 3b = 5   ------- (2)

4a + ya = 12

a (4 +y) = 12

Your question can only be done till this much.