Tags Math and Arithmetic Algebra

Animals & Plants Arts & Entertainment Auto Beauty & Health Books and Literature Business Electronics Engineering & Technology Food & Drink History Hobbies Jobs & Education Law & Government Math People & Society Science Social Studies Sports Travel & Places

0

Subjects>Math>Math & Arithmetic

2a plus 21 equals 8a-9

Anonymous

∙ 15y ago

Updated: 12/21/2022

2a + 21 = 8a - 9

Add 9 to each side:

2a + 30 = 8a

Subtract 2a from each side:

30 = 6a

Divide each side by 6:

5 = a

Wiki User

∙ 15y ago

Still curious? Ask our experts.

Chat with our AI personalities

Steve

Knowledge is a journey, you know? We'll get there.

Chat with Steve

Blake

As your older brother, I've been where you are—maybe not exactly, but close enough.

Chat with Blake

Ezra

Faith is not about having all the answers, but learning to ask the right questions.

Chat with Ezra

Add your answer:

Earn +20 pts

Q: 2a plus 21 equals 8a-9

Write your answer...

Submit

Still have questions?

imp

Continue Learning about Math & Arithmetic

How do you solve -2a plus 5 plus 3a equals 15-21?

depends what 'a' =

A plus a plus a-2a equals?

a + a + a - 2a = 3a - 2a = a

2a plus 5a plus 9a equals?

2a+5a+9a = 16a

What is the answer to 6a plus 2 equals 2a plus 10?

A=2

What is a if 2a plus 4 equals 6?

a = 1

Trending Questions

How to convert yards to feet? How many centimeters in 56.3 inch? What is 0043 in scientific notation? What is the answer to page 3.2 in Punchline Algebra book a? What is 12x13? What is 0.073 as a decimal? What is 40 rounded to the nearest cent? What is 1 12 cups doubled? What is -3.2 as a improper fraction? Area of a 130 degree arc portion of a circle with a 4m radius? Is the number positive if the power is negative? What two numbers multiplied equal 260? How do you open vaultz 3 digit numeric? How many square feet is 25 x 47? What is RNH 6270? Is atkt on floor for student who failed in 12TH HSC? How do you increase 17 by 8? Can you lift a truck 12 inches with just blocks? How many digits are there in a thousand? Shape with 0 equal sides but 4 right angles?

Resources

Top Categories

Product

Company

Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.