# Pre algebra math

How do I do 21 - y, explain

1. 👍 0
2. 👎 0
3. 👁 120
1. You don't have to "do" anything with it. It is what it is.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Spanish

**Spanish ESSAY Questions, I already turned in the test I just wanted someone to tell me their answers so I can see if mine will be correct because the teacher hasn't graded it, thxx

Writing to Explain: Explain how you can use an array to find partial products for 4x36.

asked by Justine on November 15, 2010
3. ### Math

Does an 8-car Ferris wheel have rotational symmetry? Explain I am so confused. Can someone explain this?

asked by on April 5, 2017
4. ### Math

Comparing Fractions Writing to explain James says that 5/5 is greater than 99/100. Is he correct? Explain.

asked by April on March 5, 2013
5. ### biology

explain what is the carbon cycle and why its called a cycle *explain four "moves" that occur in this cycle * explain the importance of this cycle to organisms *explain the human impact and effects on this cycle when fossil fuels

asked by anonymous on December 23, 2013
1. ### American culture

What artists and bands have had the greatest effect on popular culture? Explain why? Do you think the changing genre of popular music influences culture of time? If so, explain how? If not, explain why not?

asked by Anonymous on January 6, 2011
2. ### math

A sound wave is modeled with the equation y= 1/4 cos2pi/3 theta. a. Find the period. Explain your method. b. Find the amplitude. Explain your method. i think the period is 2pi/3 but i feel like im wrong so could someone solve this

asked by stan loona on June 3, 2019

1. List in order of importance three ways the United States was a factor in the canadian Confederation. defend your choices with examples 2. explain the concept of manifest destiny. how much of a threat to British North America

asked by Anonymous on April 1, 2014
4. ### English

I am writing an essay and my directions say to choose one character from The Call of the Wild and explain how the author created him or her. Does this mean to like explain who the character is and the things they do and say? If

asked by imnotsmart:( on October 24, 2015
5. ### Chemistry

I need to explain which species is oxidized and reduced, what the reducing agent and oxidizing is, and explain why for each of the following equations. One of them is not a reduction-oxidization problem and I need to explain why.

asked by Alyson on May 15, 2011
6. ### Math Help!

Find 21/25 of \$27,000 A:\$32,140 B:\$5,670 C:\$22,680 D:\$23,760 Could you explain how it is C?? A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put \$420 in

asked by @CrEaM@ on January 4, 2018