Solve the system using elimination. 3x + 3y = –9 3x – 3y = 21
1 answer:
<span>3x + 3y = –9
3x – 3y = 21
-----------------add
6x = 12
x = 2
</span>3x + 3y = –9
3(2) + 3y = -9
6 + 3y = -9
3y = -15
y = -5
x = 2 and y = -5
answer: <span>C. (2, –5)</span>
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