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Simplify: 5 (X + 3y) – 2 (3x – 4y) - Mathematics

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Question

Simplify:

5 (x + 3y) – 2 (3x – 4y)

Sum

Solution

5 (x + 3y) – 2 (3x – 4y)

= 5x + 15y – 6x + 8y

= 5x – 6x + 15y + 8y 

= – x + 23y

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Concept of Substitution
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Chapter 20: Substitution (Including Use of Brackets as Grouping Symbols) - Revision Exercise

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Selina Mathematics [English] Class 6
Chapter 20 Substitution (Including Use of Brackets as Grouping Symbols)
Revision Exercise | Q 7.1
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