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How do you solve y=3x-4 and 2x-3y=-9?

1 Answer

Jun 22, 2018

$x = 3$ $x=3$
$y = 5$ $y=5$

Explanation:

Let $3 y = 3 (3 x - 4)$ $3y = 3(3x-4)$ ,

$2 x - 3 (3 x - 4) = - 9$ $2x - 3(3x-4)=-9$
$2 x - 9 x + 12 = - 9$ $2x-9x+12=-9$
$- 7 x = - 21$ $-7x=-21$
$x = 3$ $x=3$
$y = 5$ $y=5$

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