5x + 2y = -2
x = y + 5

5x + 2y = -2 ; x = y + 5 ; 5(y + 5) + 2y = -2 ; 5y + 25 + 2y = -2 ; 7y + 25 = -2 ; 7y = -2 - 25 ; 7y = -27 ; y = -27/7 ; x = y + 5 ; x = -27/7 + 5 ; x = 8/7 ; Solution set: (8/7, -27/7)

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Asked 6/30/2010 2:28:21 AM

Updated 3/28/2018 2:26:58 AM

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Edited by Masamune [3/28/2018 2:26:57 AM]

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5x + 2y = -2 ;

x = y + 5 ;

5(y + 5) + 2y = -2 ;

5y + 25 + 2y = -2 ;

7y + 25 = -2 ;

7y = -2 - 25 ;

7y = -27 ;

y = -27/7 ;

x = y + 5 ;

x = -27/7 + 5 ;

x = 8/7 ;

Solution set: (8/7, -27/7)

x = y + 5 ;

5(y + 5) + 2y = -2 ;

5y + 25 + 2y = -2 ;

7y + 25 = -2 ;

7y = -2 - 25 ;

7y = -27 ;

y = -27/7 ;

x = y + 5 ;

x = -27/7 + 5 ;

x = 8/7 ;

Solution set: (8/7, -27/7)

Added 3/28/2018 2:26:58 AM

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