Question

André solves the following system of equations by elimination.
mc005-1.jpg
Which could be the resulting equations when André eliminates one of the variables?
12b = 0
6a = 0
–6a = 0
–12b = –24

Answer 1

Although the question is incomplete, I have seen it before.

The equations are: 3a + 6b 12 -3a + 6b-12

Adding the equations, we get:

12b = 0 And b = 0

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