असमानता \(-4x+9\ge 21\) का सही हल कौन सा है?
What is the correct solution of the inequality \(-4x+9\ge 21\)?
Explanation opens after your attempt
B. \(x\le -3\)
Concept
We get \(-4x\ge 12\), and dividing by (-4) reverses the sign to \(x\le -3\). A negative coefficient is the most common trap.
Why this answer is correct
The correct answer is B. \(x\le -3\). We get \(-4x\ge 12\), and dividing by (-4) reverses the sign to \(x\le -3\). A negative coefficient is the most common trap.
Exam Tip
\(-4x\ge 12\) और (-4) से भाग देने पर चिन्ह उलटकर \(x\le -3\) होता है। ऋणात्मक गुणांक सबसे सामान्य गलती है।
Login to save your score, XP, coins and progress.
