Which of the following equations is equivalent to 7 = 2y + 9? a.) -3 = 2y + 1 b.) 8 = 9y - 1 c.) -2 = y – 1 d.) -4 = 2y + 6
Mathematics · College · Sun Jan 24 2021
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We have,
7 = 2y + 9
Subtracting both sides by 11, we get
7 - 11 = 2y + 9 - 11
-4 = 2y - 2
Dividing both side by 2, we get
-2 = y -1
Hence, option (C) is correct.