Mia made a mistake in Step 3.
In Step 3, the correct addition should have been: "4x + 5 + (-4x) < 6x + 1 + (-4x)".
We can simplify this to "5 < 2x + 1".
Mia incorrectly simplified it to "-2x < 6".
Mia is trying to find her mistake in the problem shown. In which step did she first make a mistake?
Step 1: 4x + 5 < 6x + 1 (Given)
Step 2: −2x + 5 < 1 (Subtraction)
Step 3: −2x < 6 (Addition)
Step 4: x > −3 (Division)
1 answer