Solve by the linear combination method (with or without multiplication).

2x + 8y = –2
5x + 6y = 9

A.
(3, –1)

B.
(–2, 2)

C.
(–2, 7)

D.
(–1, 3)

Question

Solve by the linear combination method (with or without multiplication).

    2x + 8y = –2
    5x + 6y = 9
 
 
 A.
(3, –1)
 
 B.
(–2, 2)
 
 C.
(–2, 7)
 
 D.
(–1, 3)

michele_laino · Answer

please divide by 2 both sides of your first equation, first, and after that
multiply both sides of the same equation by -5.
Then add your new first equation to your old second equation

anonymous · Answer

dividing the first equation by 2 would give me x+4y=-1 right? @Michele_Laino

solomonzelman · Answer

actually wouldn't feel bad to try using matrix, if not that it is a bit too long to put intext matrix with steps on this site.