Answer
Find out the value of x .
To prove
As given
px + qy = r and px + qy = r
Multiply px + qy = r by 2 and subtracted with 2px - qy = 2r .
2px -2px + 2qy - qy = 2r - 2r
0 + qy = 0
y = 0
Put in the px + qy = r
px + 0 = r
px = r
[tex]x = \frac{r}{p}[/tex]
The value of x be
[tex]x = \frac{r}{p}[/tex]
Hence proved