How do i simplify (2x-4y) - (5x-y) ?
2006-08-10 03:42:06 · 16 answers · asked by h_townbaseball 1 in Science & Mathematics ➔ Mathematics
distribute the minus like so:
2x - 4y - 5x + y
then combine like terms:
2x - 5x - 4y + y =
-3x - 3y
2006-08-10 03:46:33 · answer #1 · answered by Nes 3 · 0⤊ 0⤋
Remember that -(5x-y) is the same as + (-1)(5x-y) so first 'multiply through' with -1 (which will change the signs) to get
(2x-4y)+(-5x+y)
Now you can just drop the parenthesis and get
2x-4y-5x+y
Then you add up the like terms (the x terms and the y terms) and get
-3x-3y
And, if you have to reduce it to its lowest terms, factor out the -3 to get
-3(x+y)
OK?
But *you* are the one who needs to practice this
Doug
2006-08-10 10:51:53 · answer #2 · answered by doug_donaghue 7 · 0⤊ 0⤋
The original:
  ( 2x - 4y ) - ( 5x - y )
Distribute the negative:
  ( 2x - 4y ) + ( -5x + y )
Remove the parenthesis:
  2x - 4y - 5x + y
Group the x's and the y's:
  ( 2x - 5x ) + ( -4y + y )
Add the x's and the y's:
  -3x + -3y
Divide both by -3:
  -3 ( x + y )
2006-08-10 10:55:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋
as there is no multiplication nor division you remove the brackets:
2x - 4y - 5x - y
Which you can then rearrange (in your head):
2x - 5x - 4y - y
Which equals:
-3x - 3y
Which can be simplified like this:
-3 (x + y)
2006-08-10 10:47:44 · answer #4 · answered by canguroargentino 4 · 0⤊ 0⤋
(2x = 4y) - (5x - y)
clearing parenthesis. if a ( - ) sign precides the parenthesis change all signs within the parenthesis.
2x - 4y - 5x + y
2x - 5x - 4y + y
Collecting terms
- 3x -3y
The answer is -3x -3y
2006-08-10 14:15:40 · answer #5 · answered by SAMUEL D 7 · 0⤊ 0⤋
2x - 5x ... - 4y + y (two minuses make a plus)
-3x -3y
-3( x + y)
i haven't done this in years, sorry if its wrong
2006-08-10 10:47:19 · answer #6 · answered by Anonymous · 0⤊ 0⤋
(2x-4y) - (5x-y) = 2x-4y-5x+y = -3x - 3y = -3(x+y)
2006-08-10 11:51:31 · answer #7 · answered by alexander 1 · 0⤊ 0⤋
(2x-4y) - (5x-y) = 2x-4y-5x+y
= -3x - 3y
= -3(x+y)
2006-08-10 10:46:44 · answer #8 · answered by Newme 3 · 0⤊ 0⤋
(2x - 4x) - (5x - y)
= 2x - 4y - 5x +y
= -3x - 3y
= -3(x+y)
2006-08-10 10:56:08 · answer #9 · answered by Nina E 2 · 0⤊ 0⤋
(2x-4y) - (5x-y)
= 2x-4y-5x+y
= -3x-3y
= -3(x+y)
2006-08-10 10:46:50 · answer #10 · answered by wordsofapoet 4 · 0⤊ 0⤋