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How do you solve $xy - 3x = 40$ ; $x= 5$ ?

1 Answer

Jun 9, 2018

$y =11$

Explanation:

$xy - 3x = 40$ ----- equation (1)

Given $x = 5$

Substituting the value of $x$ in equation (1):

$5 xx y - 3 xx 5 = 40$

$=> 5y - 15 = 40$

$=> 5y = 40 +15 = 55$

$=> 5y =55$

$=> y = 55/5$

$therefore y = 11$

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