Answer:
12b = 0
Step-by-step explanation:
We are given that,
André solves the following system using elimination method.
3a+6b=12
-3a+6b=-12
<em>Now, in elimination method, we eliminate any one variable from the equations to obtain an equation in single variable.</em>
As, from the system, we see that,
The variable 'a' can be removed by adding both the equations.
So, after adding the equations, we have,
(3a+6b) + (-3a+6b) = 12 + (-12)
i.e. (3a-3a) + (6b+6b) = 12 - 12
i.e. 12b = 0
Hence, the resulting equation is '12b=0'.
