math
By Caseygodwin2
@Caseygodwin2 (1)
United States
11 responses
@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 (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
@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 (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 (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
@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 (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!
@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
