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Find all real numbers [tex]\( x \)[/tex] such that [tex]\( 4x - 18 \ \textgreater \ 2 \)[/tex] and [tex]\( -17x - 8 \leq -25 \)[/tex].

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Sagot :

Certainly! Let's solve the given inequalities step by step:

1. Solve the first inequality: [tex]\( 4x - 18 > 2 \)[/tex]
- Step 1: Add 18 to both sides to isolate the term with [tex]\( x \)[/tex]:
[tex]\[ 4x - 18 + 18 > 2 + 18 \][/tex]
Simplifying this gives:
[tex]\[ 4x > 20 \][/tex]

- Step 2: Divide both sides by 4 to solve for [tex]\( x \)[/tex]:
[tex]\[ \frac{4x}{4} > \frac{20}{4} \][/tex]
Simplifying this gives:
[tex]\[ x > 5 \][/tex]

2. Solve the second inequality: [tex]\( -17x - 8 \leq -25 \)[/tex]
- Step 1: Add 8 to both sides to isolate the term with [tex]\( x \)[/tex]:
[tex]\[ -17x - 8 + 8 \leq -25 + 8 \][/tex]
Simplifying this gives:
[tex]\[ -17x \leq -17 \][/tex]

- Step 2: Divide both sides by -17. Note that dividing by a negative number reverses the inequality sign:
[tex]\[ \frac{-17x}{-17} \geq \frac{-17}{-17} \][/tex]
Simplifying this gives:
[tex]\[ x \geq 1 \][/tex]

Now, combine the two conditions:
- From the first inequality: [tex]\( x > 5 \)[/tex]
- From the second inequality: [tex]\( x \geq 1 \)[/tex]

Both conditions must be satisfied simultaneously. The range that satisfies both is the stricter one, which is:
[tex]\[ x > 5 \][/tex]

So the solution to the problem is:
All real numbers [tex]\( x \)[/tex] such that [tex]\( x > 5 \)[/tex].