असमानता \(21-7x\le 0\) का हल क्या है?

What is the solution of the inequality \(21-7x\le 0\)?

Explanation opens after your attempt
Correct Answer

A. \(x\ge 3\)

Step 1

Concept

From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.

Step 2

Why this answer is correct

The correct answer is A. \(x\ge 3\). From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.

Step 3

Exam Tip

\(21-7x\le 0\) से \(-7x\le -21\), इसलिए \(x\ge 3\)। ऋणात्मक से भाग देने पर दिशा बदलती है।

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Mathematics Answer, Explanation and Revision Hints

असमानता \(21-7x\le 0\) का हल क्या है? / What is the solution of the inequality \(21-7x\le 0\)?

Correct Answer: A. \(x\ge 3\). Explanation: \(21-7x\le 0\) से \(-7x\le -21\), इसलिए \(x\ge 3\)। ऋणात्मक से भाग देने पर दिशा बदलती है। / From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.

Which concept should I revise for this Mathematics MCQ?

From \(21-7x\le 0\), we get \(-7x\le -21\), so \(x\ge 3\). The direction changes when dividing by a negative number.

What exam hint can help solve this Mathematics question?

\(21-7x\le 0\) से \(-7x\le -21\), इसलिए \(x\ge 3\)। ऋणात्मक से भाग देने पर दिशा बदलती है।