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Simplify: "3a"/8 + "4a"/5 - ("A"/2 + "2a"/5) - Mathematics

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Question

Simplify: `"3a"/8 + "4a"/5 - ("a"/2 + "2a"/5)`

Sum

Solution

`"3a"/8 + "4a"/5 - ("a"/2 + "2a"/5)`

`= ("15a" + "32a" - (20"a" + "16a"))/40`  ...(LCM of 8,5,2 = 40)

`= ("47a"  -  "36a")/40 = "11a"/40`

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Performs Operations (Addition and Subtraction) on Algebraic Expressions with Integral Coefficients Only.
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Chapter 11: Fundamental Concepts (Including Fundamental Operations) - Exercise 11 (E)

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Selina Concise Mathematics [English] Class 7 ICSE
Chapter 11 Fundamental Concepts (Including Fundamental Operations)
Exercise 11 (E) | Q 12
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