Marcie solved the following inequality, and her work is shown below:
-2 (x - 5) ≤ 6x + 18
-2x + 10 ≤ 6x + 18
-8x + 10 ≤ 18
-8x ≤ 8
x ≤ - 1
What mistake did Marcie make in solving the inequality?
She subtracted 6x from both sides when she should have added.
She subtracted 10 from both sides when she should have added.
She did not make a mistake.
When dividing by - 8, she did not change the direction of the sign.
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