असमानता (3x<21) का हल क्या है?
What is the solution of (3x<21)?
Explanation opens after your attempt
A. (x<7)
Concept
Dividing both sides by (3) gives (x<7). Division by a positive number keeps the sign the same.
Why this answer is correct
The correct answer is A. (x<7). Dividing both sides by (3) gives (x<7). Division by a positive number keeps the sign the same.
Exam Tip
दोनों ओर (3) से भाग देने पर (x<7) मिलता है। धनात्मक भाग में चिह्न वैसा ही रहता है।
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