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oliviaguillen99
oliviaguillen99 oliviaguillen99
  • 16-06-2016
  • Mathematics
Answered

find the value of Q in the system so that the solution to the system is


x-3y=4

2x+Qy=8

Verified Answer :

jhonyy9
jhonyy9 jhonyy9
  • 16-06-2016

x -3y = 4  multiplie both sides by -2 => -2x +6y = -8 
2x +Qy = 8

-2x +6y = -8
 2x +Qy = 8
------------------ assume the same terms 
  0 6y +Qy = 0

6y +Qy = 0 

Qy = -6y  divide both sides by y and will get 

Q = -6

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