|2y + 1| = 7
|2y + 1| = 7 2y + 1 = 7 2y = 7 - 1 2y = 6 y = 6/2 y = 3 -2y - 1 = 7 -2y = 7 + 1 -2y = 8 y = 8/-2 y = -4 Solution set: y = -4 or y = 3 |2(3) + 1| = 7 |6 + 1| = 7 |7| = 7 |2(-4) + 1| = 7 |-8 + 1| = 7 |-7| = 7
Question
Updated 1/31/2016 1:20:12 PM
Edited by Andrew. [1/31/2016 1:20:10 PM]
Rating
3
|2y + 1| = 7
2y + 1 = 7
2y = 7 - 1
2y = 6
y = 6/2
y = 3
-2y - 1 = 7
-2y = 7 + 1
-2y = 8
y = 8/-2
y = -4
Solution set: y = -4 or y = 3
|2(3) + 1| = 7
|6 + 1| = 7
|7| = 7
|2(-4) + 1| = 7
|-8 + 1| = 7
|-7| = 7

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