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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Evaluate: -2 + 2/5 + (-2)/15 - Mathematics

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प्रश्न

Evaluate: `-2 + 2/5 + (-2)/15`

बेरीज

उत्तर

`-2 + 2/5 + (-2)/15`

`(-2)/1 + 2/5 + (-2)/15`

`= (- 2 xx 15)/(1 xx 15) + (2 xx 3)/(5 xx 3) + (-2 xx 1)/(15 xx 1)`    (∵ L.C.M. of 1, 5, 15 = 15)

`= (-30)/15 + (6)/15 + (-2)/15`

`= (- 30 + 6 - 2)/15`

`= (- 32 + 6)/15 = (- 26)/15`

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Concept for Problem Solving Using Operations on Rational Numbers
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Rational Numbers - Exercise 2 (C)

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सेलिना Concise Mathematics [English] Class 7 ICSE
पाठ 2 Rational Numbers
Exercise 2 (C) | Q 3.5
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