Solve the system using elimination.

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Solve the system using elimination.
3x + 3y = –9
3x – 3y = 21

a.  (2, –5)

b.  (3, –6)

c.  (–5, 2)

d.  (3, 3)

Apr 29th, 2015

3x + 3y = –9
3x – 3y = 21

so 

3x + 3y = –9

+
3x – 3y = 21

so 

6x = 12

3x - 3y = 21 

so 

x=2

3y = -15

so 

x = 2 

y = -5 

so is 

a.  (2, –5)

Good Luck ,

please if you have any other homework call me first i will give you the best solution 

Apr 29th, 2015

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