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Which is the number line solution of (\frac{9-x}{-2}<4)?असमानता (\frac{9-x}{-2}<4) का संख्या रेखा हल कौन-सा है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (x>1), open dot at (1) shaded right(x>1), (1) पर खुला बिंदु और दाईं ओर
Multiplying by (-2) reverses the sign to (9-x>-8), so (x<17), not (x>17). In exams, reverse the sign when removing a negative denominator.(-2) से गुणा करने पर चिन्ह पलटकर (9-x>-8), इसलिए (x<17) नहीं बल्कि (x<17) मिलता है। परीक्षा में negative denominator हटाते समय चिन्ह पलटें।
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