Answer:
21 incorrect
22 correct
Explanation:
21 is incorect because on the second line when he distributed -2 within the bracket it should be -14+2y+4 = -4 not -14-2y+4. because negative x negative is positive.
22. is correct
22 one is correct and so 21 its nothing wrong you can give it a+ like a teacher
reasoning: because the following equation should be done as it is so its correct
hope my answer helps you
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