असमानता \(-3x\ge 21\) का हल क्या है?
What is the solution of the inequality \(-3x\ge 21\)?
Explanation opens after your attempt
A. \(x\le -7\)
Concept
Dividing by (-3) reverses the sign and gives \(x\le -7\). Reverse the sign while dividing by a negative number.
Why this answer is correct
The correct answer is A. \(x\le -7\). Dividing by (-3) reverses the sign and gives \(x\le -7\). Reverse the sign while dividing by a negative number.
Exam Tip
(-3) से भाग देने पर चिह्न पलटता है और \(x\le -7\) मिलता है। ऋणात्मक से भाग देते समय चिह्न बदलें।
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