bryson15 bryson15

19-01-2017
Mathematics

Answered

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

A(–5, 2)

B(3, –6)

C(2, –5)

D(3, 3)

Verified Answer :

Anonymous Anonymous

19-01-2017

3x + 3y = –9
3x – 3y = 21
-----------------add
6x = 12
x = 2

3x + 3y = –9
3(2) + 3y = -9
6 + 3y = -9
3y = -15
y = -5

x = 2 and y = -5

answer: C. (2, –5)

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