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Subtraction of Integers

Question 1 i ...

Question

Question 1 (i)

Simplify combining like terms:

21b - 32 + 7b - 20b

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Solution

21b - 32 + 7b - 20b = 21b + 7b - 20b - 32
= 28b - 20b - 32 = 8b - 32

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Q. Simplify combining like terms:

21 b - 32 + 7 b - 20 b

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Q. 21b-32+7b-20b

The expression 21b - 32 + 7b - 20b on simplification gives

Question 1 (ii)

Simplify combining like terms:

$- z^{2} + 13 z^{2} - 5 z + 7 z^{3} - 15 z$

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Subtraction of Integers

Standard VI Mathematics

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