Solve: |2x+3|-6=11 A) 7 or -10 B) -7 or -10 C) -7 or 10 D) 7 or 10

asked May 8, 2017 160k views

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Solve: |2x+3|-6=11
A) 7 or -10
B) -7 or -10
C) -7 or 10
D) 7 or 10

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1 vote

Answer is A, as (2x+3) can either be +17 or -17, so solve for them.

Ben Sandeen answered May 11, 2017

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7 votes

|2x+3| - 6 =11

|2x+3| = 11+6 = 17

2x+3 = 17 or 2x+3 = -17
2x = 17-3, or 2x = -17-3

2x = 14 or 2x = -20
x = 7 or x = -10

7 or -10

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