1
Question
21b-32+7b-20b
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Solution
Simplify combining like terms:
(a) 21b – 32 + 7b – 20b
Answer: 21b – 32 + 7b – 20b
= 21b + 7b – 20b – 32
= 28b – 20b – 32 = 8b – 32
Answer:
21b - 32 + 7b - 20b
= 21b + 7b - 20b -32
= 8b - 32.
Ans: 8b - 32.
Simplify combining like terms:
(a) 21b – 32 + 7b – 20b
Answer: 21b – 32 + 7b – 20b
= 21b + 7b – 20b – 32
= 28b – 20b – 32 = 8b – 32
Answer:
21b - 32 + 7b - 20b
= 21b + 7b - 20b -32
= 8b - 32.
Ans: 8b - 32.
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