solve for x:.......the absolute value of 5-2x=11?

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solve for x:.......the absolute value of 5-2x=11?

2007-12-12 04:24:48 · 3 answers · asked by jason c 1 in Science & Mathematics ➔ Mathematics

3 answers

|5-2x| = 11 means that

5-2x = 11 or 5-2x = -11

solving the first case:

-2x = 6
x = -3

second case:

-2x = -16
x= 8

final answer: x = -3 or x = 8

that's it! :)

2007-12-12 04:31:21 · answer #1 · answered by Marley K 7 · 0⤊ 0⤋

5 - 2x = 11,
multiply through by -1,
2x - 5 = -11,
add 5 to both sides,
2x = -6,
x = -3 [ans].

5 - 2x = -11,
multiply through by -1,
2x - 5 = 11,
Add 5 to both sides,
2x = 16,
x = 8 [ans].

2007-12-12 04:35:10 · answer #2 · answered by BB 7 · 0⤊ 0⤋

|5-2x|=11
so
5-2x=11 OR 5-2x = -11
x=-3 OR x=8

2007-12-12 04:32:03 · answer #3 · answered by j s 2 · 0⤊ 0⤋