How do you solve the following system?: $2x +7y =-9 , 12x +5y = -2$

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How do you solve the following system?: $2x +7y =-9 , 12x +5y = -2$

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Answer 1 · 2016-03-06T15:47:49

$y=-52/37$
$x=-31/74$

Explanation:

$2x + 7y =-9" "(1)$
$12x +5y=-2" "(2)$
$color(red)6(2x +7y)=-color(red)6*9$
$12x+42y=-54" "(3)$
$"find (2)-(3)"$
$cancel(12x)-cancel(12x)+5y-42y=-2+54$
$-37y=52$
$y=-52/37$
$2x+7(-52/37)=-9$
$2x-364/37=-9=$
$2x=-9+364/37$
$2x=-31/37$
$x=-31/74$

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How do you solve the following system?: $2x +7y =-9 , 12x +5y = -2$

1 Answer

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How do you solve the following system?: 2x +7y =-9 , 12x +5y = -2 2x +7y =-9 , 12x +5y = -2

1 Answer

Explanation:

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How do you solve the following system?: $2x +7y =-9 , 12x +5y = -2$