New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 7

EASY

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IMPORTANT

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Remove brackets and simplify if possible, by collecting like terms:
$8 a - (b + 7) + 2 (a - b)$

Important Questions on Algebraic Expressions

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 8

Remove brackets and simplify if possible, by collecting like terms:

3 m - 2 (m + 3) + 4 (m - 1)

EASY

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 9

Remove brackets and simplify if possible, by collecting like terms:

a (a - b) - b (b - a)

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 10

Remove brackets and simplify if possible, by collecting like terms:

2 x - {7 - 3 (x + 10) + x}

MEDIUM

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 11

Remove brackets and simplify if possible, by collecting like terms:

(b^{2} + c^{2}) - [b^{2} - b (b + c) + c^{2}]

MEDIUM

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 12

Remove brackets and simplify if possible, by collecting like terms:

n [15 - n (2 n + 5) (n - 3) + n \{- 15 - 7 n (n - 4)\} + 18]

MEDIUM

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Exercise>Q 13

5 a - 3 [3 a - (4 - 7 a)] + 4 (a - 3)

on simplification is equal to

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Mental Maths>Q 1

Simplify :

(3 x - 5 y) (4 x + 7 y)

EASY

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IMPORTANT

New Mathematics Today Class 7>Chapter 11 - Algebraic Expressions>Mental Maths>Q 2

If

x = - 1, y = 2, z = - 2

, find the value of

x^{3} + y^{3} + z^{3}

.