The step that is not allowed is (b) add the left side of equation 2 to the left side of equation 1
How to determine the disallowed step?
The system of equations is given as:
2x - 3y = 12
-2x + y = 8
- Adding the two equations would eliminate x.
- Multiplying the second equation by 3 and then subtracting the resulting equation from (1) would eliminate y
This means that the step that is not allowed is (b)
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