Question

3x+y=13 , 3y-x=9 solve by comparison method stap by stap
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Answer 1

Answer:

$\boxed {\blue{x = 3\: and \: y = 4}}$

Multiply 2nd equation by 3

so we get,

9y - 3x = 27

So by adding both the equation,

we get,

10y = 40

y = 4

so x = 3