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Chhaya simplified a rational number in this manner -25-30=-56. What error did the student make? - Mathematics

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प्रश्न

Chhaya simplified a rational number in this manner `(-25)/(-30) = (-5)/6`. What error did the student make?

योग

उत्तर

It a negative (–) sign comes in both numerator and denominator, then it will be cancelled. 

So, the resulting fraction will be positive. 

∴ `(-25)/(-30) = 25/30 = 5/6`

Here, Chhaya divided numerator by 5 but denominator by –5.

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अध्याय 8: Rationals Numbers - Exercise [पृष्ठ २५३]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 8 Rationals Numbers
Exercise | Q 110. | पृष्ठ २५३

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