# Math

42=18-4v

I do not understand this AT ALL. If y'all could explain how to do this to me, that would be EXTREMELY helpful. Thank you!

1. 👍 0
2. 👎 0
3. 👁 64
1. 42=18-4v

It's the same as

18 - 4v = 42
Subtract 18 from both sides.

-4v = 24
Divide both sides by -4
v = -6

1. 👍 0
2. 👎 0
2. I assume the instructions were to "solve"

The quest is to isolate the variable on one side of the equation
and have everything else on the other side, so ....

42=18-4v
let's add 4v to both sides
42 + 4v = 18 - 4v + 4v , resulting in the -4v+4v to cancel out
42 + 4v = 18
don't like that 42 on the left side, so
subtract 42 from both sides
42 + 4v - 42 = 18 - 42 , the 42-42 on the left cancels out
4v = - 24
I don't like the 4 in front of the 4v, would prefer to have just "v"
The 4 is "connected" to 4v by multiplication, so let's divide both sides by 4
4v/4 = -24/4

to get: v = -6

1. 👍 0
2. 👎 0
posted by Reiny
3. Thank you so much!

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Algebra (Does any one understand special factors)?

I do not understand special factors, the teacher on Friday tried to explain in to me in class but she went so fast, and every time we complain that we don't understand it she gets mad. So could someone please help me with at least

asked by Rae Rae on April 5, 2009
2. ### Physics

How can you explain work, in regards to electricity? I understand it as the product of energy used, usually displacement. I cant understand or explain it as far as electricity is concerned. I'm not sure if I understand it at all.

asked by Steve on June 19, 2016
3. ### Science

Can someone explain grade 9 biology translation and transcription for me? My teacher doesnt explain it well. I cannot understand it at all. Detailed description please and easy to understand.

asked by John on June 13, 2018
4. ### Science

I REALLY REALLY NEED HELP SO 1.I need to do an essay asking you (me)to explain what is the difference between erosion,transport,and deposition?... 2.another essay asking me to explain you (me) to explain the destructive and

asked by Alia on June 14, 2014
5. ### math problems

thanks alot for giving me those sites but i already know this stuff. They don't teach how to read an aritmetic problem so its confusing to me what to do with them, when sometimes its so obvious i just need someone to actually

asked by christina on July 24, 2007
6. ### Math

Subtraction with renaming Am very confused. Am trying to teach my little brother but am getting everything wrong. I have the right answer but the work does not add up to that. 6 - 3 2/5 I got 3 2/5 but the answer is 2 3/5 I

asked by Ali on March 20, 2018
7. ### Chem Urgency

Can you explain what the pseudo-gas configuration is? I have the definition but I still don't understand. I have the example.. Sn([Kr] 5s24d105p2) Sn4+ ([Kr]4d10)+4e- I understand the first part but I don't understand the second.

asked by Sami on November 24, 2007
8. ### Honors Chemistry

Can someone please explain to me how to use the stock naming system when naming chemical/ionic compounds? I reeeeaaaally do not get it. Here's some examples: 1. CaCO3 ==> I know the answer is calcium carbonate, but how is it that

asked by Emily on October 19, 2009
9. ### trig

I'm confused with this concept: Okay, so I have this problem: cos2x( 2 cos+1)= 0 I understand I have to work the problems separately and I get cos x= 2 and cos x= 1/2 Now, what I don't understand is how this connects to pi,

asked by Anonymous on October 29, 2011
10. ### Math

Explain how you would factor x^2-5x-24 You must explain EACH step and process t get to your factored solution The work I have done - (x-8)(x+3) I just don't understand how to explain.

asked by Kelly on April 19, 2017
11. ### math

"The length of the Boston Marathon is 138,435 ft. Each stride, or step, by a particular runner is 3 ft. long. Does the number of strides the runner takes fit evenly into the length of the race? Explain" I don't understand what I'm

asked by min yoonghy on January 11, 2018

More Similar Questions