How do you solve the following linear system $x-3y= 9, 7x+2y=-3$ ?

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How do you solve the following linear system $x-3y= 9, 7x+2y=-3$ ?

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Answer 1 · 2018-05-25T13:00:04

$x=-66/23,y=405/23$

Explanation:

Multiplying the first equation by $-7$ and adding to the second we get
$23y=-66$ so
$y=-66/23$
plugging this into the first equation:
$x=9+3*66/23=(9*23+3*66)/23=405/23$

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How do you solve the following linear system $x-3y= 9, 7x+2y=-3$ ?

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Explanation:

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How do you solve the following linear system x-3y= 9, 7x+2y=-3 x-3y= 9, 7x+2y=-3 ?

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How do you solve the following linear system $x-3y= 9, 7x+2y=-3$ ?