Question

Difficulty: MediumSolving One-Variable Inequalities

What is the greatest integer value of xx that satisfies the following inequality?

3(4−2x)−2x>5(x−3)−10x3(4 - 2x) - 2x > 5(x - 3) - 10x

Answer: 8

Answer

8
Solving the inequality yields x < 9. Since the inequality is strictly less than 9, the greatest integer that satisfies the condition is 8.

Step-by-Step Solution

1
Distribute the 3 and 5
12−6x−2x>5x−15−10x12 - 6x - 2x > 5x - 15 - 10x
To eliminate the parentheses on both sides of the inequality.
2
Combine like terms
12−8x>−5x−1512 - 8x > -5x - 15
To simplify both sides before isolating the variable.
3
Isolate the variable terms
−3x>−27-3x > -27
Subtract 12 from both sides and add 5x to both sides to get all x terms on the left and constants on the right.
4
Divide by -3
x<9x < 9
Dividing an inequality by a negative number requires flipping the inequality sign.
5
Find the greatest integer
8
The inequality states x must be strictly less than 9, so the largest possible integer is 8.

Key Concept

Solving linear inequalities, applying the negative division flip rule, and interpreting integer boundaries.
Rate this question