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CISCEICSE ICSE Class 7
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Syllabus

Subtract – 5a2 – 3a + 1 from the Sum of 4a2 + 3 – 8a and 9a – 7.

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Question

Subtract – 5a2 – 3a + 1 from the sum of 4a2 + 3 – 8a and 9a – 7. 

Sum
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Solution

sum of 4a2 + 3 – 8a and 9a – 7

= 4a2 + 3 - 8a + 9a - 7 = 4a2 + a - 4 

∴ (4a2 + a - 4) - (- 5a2 - 3a + 1) 

= 4a2  + a - 4 + 5a2 + 3a - 1 

= 4a2 + 5a2 + a + 3a - 4 - 1

= 9a2 + 4a - 5 

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

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

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