math

United States
May 14, 2008 6:29pm CST
Can u help me with this problem simplify 5x-8y-(x+3)+4(x-2y)
11 responses
goergineo
@goergineo (1498)
• Jordan
16 May 08
well, I am not good in math but I think I am gonna give it a shot. 5x-8y-(x+3)+4(x-2y)= (x+3)+4(x-2y)-(-(5x-8y)) (x+3)+4(x-2y)-(-(5x-8y))= 5x-8y-(x+3)+4(x-2y) not I think you can add both sides of both equations 5x-8y-(x+3)+4(x-2y)+ (x+3)+4(x-2y)-(-(5x-8y)) = (x+3)+4(x-2y)-(-(5x-8y))+ 5x-8y-(x+3)+4(x-2y) all in all; 0 = 0 so I think it 0. I am not good at math but I think I gave it a good shot. hope this is right. good louck
1 person likes this
goergineo
@goergineo (1498)
• Jordan
16 May 08
I was joking. It is easy man. previous mylotters gave you the answer. good luck and you have my best wishes.
1 person likes this
1madhu23
@1madhu23 (90)
• India
15 May 08
5x-8y-(x+3)+4(x-2y) First multiply x+3 with -1 5x-8y-x-3+4(x-2y) Secondly, multiply x-2y with 4 5x-8y-x-3+4x-8y Now do addition of all x and ys separately 5x-x+4x-8y-8y-3 So the the simplified one is 8x-16y-3
1 person likes this
Alnitak
@Alnitak (423)
• Italy
15 May 08
This is the clearest explanation ;) P.S. Why are you people putting it equal to 0? The problem was only asking to simplify. I guess that if they're doing this kind of problems they're not working with equations, yet. ;-)
Anne18
@Anne18 (11029)
•
15 May 08
Oh my goodness. Maths was never my strong point at school, failed my maths exams, and i can't do big numbers!!! good job I don't do the banking in our house!!! I am wondering why you need to know the answer to this maths question?? I hope you are not cheating with your maths homework!!! What do the y's and x's mean anyway?
Alnitak
@Alnitak (423)
• Italy
15 May 08
I guess that's what he was doing :D X and Y are the 'unknown quantities' (or variables, I guess). They're like hidden numbers to find out and when thy're written right next a number it means that it's a multiplication. For example 3x = 12 means that you have to find the number that multiplied for 3 gives 12.
abdulmajeed
@abdulmajeed (75)
• India
20 May 08
5x-8y-(x+3)+4(x-2y) =5x-8y-x-3+4x-8y ( opening the brackets) =9x-x-16y -3 (adding and subtracting the like terms =8x -16y -3 (Ans.) is the final solution of the given problem
chubibo
@chubibo (294)
• Philippines
15 May 08
we have the same problem with vampire.. i think this the solution..i hope this is right.. 5x-8y-(x+3)+4x-2y) 5x-8y= (x+3) - 4x+8y 5x+4x-x-8y-8y -3 = 0 8x-16y- 3 =0
Alnitak
@Alnitak (423)
• Italy
15 May 08
Where does that = comes from? :D
shyloo
@shyloo (108)
• Philippines
20 May 08
You just have to do some groupings or transposition if it'll help you see the solution better... 5x - (x+3)+ 4(x-2y) = 8y 5x - x - 3 + 4x - 8y = 8y 8x -3 - 8y = 8y 8x - 3 = 16y There's your answer. Learning Algebra is just easy. Some find it difficult, or I guess distracted because of the variables and the positive/negative signs. But dont let it fool you! ('v')
checapricorn
@checapricorn (16061)
• United States
15 May 08
Someone gave the correct answer already! I will just explain the process in a simple and short cut way: eliminating the parenthesis first by distributive property then combine similar terms guided with the law of integers!
gwoman2
@gwoman2 (710)
• United States
16 May 08
Hi Caseygodwin2, It's been a while but my answer is completely different from mylot friends: 5x-8y-(x+3)+4(x-2y)= 5x-8y-3x+4x-8y= 5x-3x+4x=6x The 8y's cancel each other out. go to math.com...they'll help! ~G~
Alnitak
@Alnitak (423)
• Italy
15 May 08
If you think it's difficult maybe you should say what you don't understand so we maybe could explain it. Copying the result doesn't help you so much :D
xalimx
@xalimx (54)
• Malaysia
15 May 08
5x-8y-x-3+4x-8y = 0 8x-16y-3 = 0 am i right? Please bring up any good and tough question in here.
rupturetissue
@rupturetissue (114)
• India
16 May 08
simple first follow the set of BODMAS(bracket operation, division, multiplication, addition, subtraction) so following this we have step 1: bracket operation so we get 5x-8y-x-3+4x-8y step 2: terms of the same type are kept together 5x-x+4x-8y-8y-3 step 3: addition 8x-16y-3