Math, asked by Carson, 10 months ago

Simplify by combining like terms
a)21b – 32 + 7b – 20b
b) – z2 + 13z2 – 5z + 7z3 – 15z

Answers

Answered by sukhmanbirsinghd

4

Answer:

a. 8b- 32

b. 12z2-20z+7z3

Step-by-step explanation:

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

21b+7b-20b-32

28b-20b-32

8b-32

b. -z2+13z2-5z+7z3-15z

-z2+13z2-5z-15z+7z3

12z2-20z+7z3

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