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25-03-2015
Mathematics

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Name the y value of the solution to the system of equations.
Use substitution:

-4x + y = 6

-5x - y = 21

Respuesta :

crisforp crisforp

25-03-2015

y = 4x+ 6 and y = -5x - 21 ;
4x+ 6 = -5x - 21 ;
9x = -27 ;
x = - 3 ;
y = - 6 ;

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