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What is the solution for this equation?

[tex]\[ |3x - 8| = 22 \][/tex]

A. [tex]\( x = -\frac{14}{3} \)[/tex] or [tex]\( x = 10 \)[/tex]
B. [tex]\( x = \frac{14}{3} \)[/tex] or [tex]\( x = 10 \)[/tex]
C. [tex]\( x = -10 \)[/tex] or [tex]\( x = 10 \)[/tex]
D. [tex]\( x = 10 \)[/tex]


Sagot :

To solve the equation [tex]\( |3x - 8| = 22 \)[/tex], we need to consider the definition of absolute value, which requires us to examine two possible cases:

1. [tex]\( 3x - 8 = 22 \)[/tex]
2. [tex]\( 3x - 8 = -22 \)[/tex]

Let's solve each case separately:

Case 1: [tex]\( 3x - 8 = 22 \)[/tex]

1. Add 8 to both sides of the equation to isolate the term with [tex]\( x \)[/tex]:
[tex]\[ 3x - 8 + 8 = 22 + 8 \][/tex]
[tex]\[ 3x = 30 \][/tex]

2. Divide both sides by 3 to solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{30}{3} \][/tex]
[tex]\[ x = 10 \][/tex]

Case 2: [tex]\( 3x - 8 = -22 \)[/tex]

1. Add 8 to both sides of the equation:
[tex]\[ 3x - 8 + 8 = -22 + 8 \][/tex]
[tex]\[ 3x = -14 \][/tex]

2. Divide both sides by 3 to solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{-14}{3} \][/tex]
[tex]\[ x = -\frac{14}{3} \][/tex]

Now, listing both solutions, we get:
[tex]\[ x = 10 \quad \text{or} \quad x = -\frac{14}{3} \][/tex]

Looking at the given multiple-choice options:
- [tex]\( x = -\frac{14}{3} \)[/tex] or [tex]\( x = 10 \)[/tex]
- [tex]\( x = \frac{14}{3} \)[/tex] or [tex]\( x = 10 \)[/tex]
- [tex]\( x = -10 \)[/tex] or [tex]\( x = 10 \)[/tex]
- [tex]\( x = 10 \)[/tex]

The correct answer is the first option:
[tex]\[ x = -\frac{14}{3} \quad \text{or} \quad x = 10 \][/tex]

So the solution is:
[tex]\[ x = -\frac{14}{3} \text{ or } x = 10 \][/tex]