Find the Total Savings of a Boy Who Saves ₹ (4x – 6y); ₹ (6x + 2y); ₹ (4y – X) and ₹ (Y – 2x) for Four Consecutive Weeks. - Mathematics

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Sum

Find the total savings of a boy who saves ₹ (4x – 6y), ₹ (6x + 2y), ₹ (4y – x) and ₹ (y – 2x) for four consecutive weeks.

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Solution

  4x − 6y
  6x + 2y
  –x + 4y
–2x +   y    
  7x +  y    

∴ Total saving = ₹(7x + y)

Concept: Combining like Terms
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Chapter 11: Algebraic Expressions - Exercise 11 (B) [Page 140]

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Selina Concise Mathematics Class 8 ICSE
Chapter 11 Algebraic Expressions
Exercise 11 (B) | Q 3 | Page 140
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