Question

20u+20v=27 , 25u+75v=12 solve
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Answer 1

Answer:

$let \: u = x \\ v = y \\ 20x + 20y = 27 \\ 25x + 75y = 12 \\multiply \: equation \: i \: by \: 25and \: equation \: ii \: by \: 20 \\500x + 500y = 675 \\ 500x + 150y = 240 \\ 350y = 435 \\ y = \frac{435}{350}$