Simplify combining like terms: $21 b - 32 + 7 b - 20 b$

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Solution

Simplification of algebric expression:
Given: $21 b - 32 + 7 b - 20 b$
On combining the like terms and simplifying we get
$= (21 b + 7 b - 20 b) - 32 = b (21 + 7 - 20) - 32 = b (28 - 20) - 32 = b (8) - 32 = 8 b - 32$
Therefore, we get $8 b - 32$

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Question 1 (i)

Simplify combining like terms:

21b - 32 + 7b - 20b

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