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Numerical Inequalities · Question 42 of 79

Question 42

MediumOriginal question

Solve −2x+5≤11-2x + 5 \le 11.

Options for question 42

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. Subtract 5: −2x≤6-2x \le 6.

  2. Divide by −2-2 and reverse the sign: x≥−3x \ge -3.

Worth noting

x≤−3x \le -3 divides by −2-2 without reversing the sign.

Concept
Dividing an inequation by a negative number
Typical time
90 s
Your time
—
The rule this testsSolving inequations
Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.

Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.