2007-12-24 09:14:26 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
oops i meant how to subtract 7x + 3y - 4z from -2x - 6y + z?
2007-12-24 09:15:10 · update #1
-2x - 6y + z
7x + 3y - 4z------------Subtract
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-9x - 9y + 5z
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2007-12-24 10:44:23 · answer #1 · answered by Como 7 · 1⤊ 0⤋
how to subtract 7x + 3y - 4z from -2x - 6y + z
-2x - 6y + z - (7x + 3y - 4z) =
-2x - 6y + z - 7x - 3y + 4z =
-9x - 9y + 5z
~~~
2007-12-24 17:18:22 · answer #2 · answered by A Little Sarcasm Helps 5 · 0⤊ 0⤋
7x + 3y - 4z from -2x - 6y + z
So as an equation it looks like this...
-2x - 6y + z - (7x + 3y - 4z)
= -2x - 6y + z - 7x - 3y + 4z
= -9x -9y + 5z
2007-12-24 19:30:30 · answer #3 · answered by Anonymous · 0⤊ 1⤋
7(x) - 4(x) = 3(x)
so its 3x +3y from -2x - 6y + z
so in -2x - 6y + z - 3x - 3y(because you are subtracting an addition)
-2x - 3x = -5x and -6y - 3y = -9y
answer: -5x - 9y + z (because z is shown only as + z)
2007-12-24 17:24:13 · answer #4 · answered by kimo_black_knight 2 · 0⤊ 1⤋
-2x - 6y + z
7x + 3y - 4z
Subtract the x, y, and z coefficients.
X: -2 - 7 = -9
Y: -6 - 3 = -9
Z: 1 + 4 = 5
So your answer is -9x - 9y + 5z.
Hope this helps!
2007-12-24 17:18:31 · answer #5 · answered by Viv 3 · 0⤊ 0⤋
-2x - 6y + z - (7x + 3y - 4z )=
-2x -6y +z -7x -3y +4z =
-9x -9y +5z
2007-12-24 17:19:45 · answer #6 · answered by Anonymous · 0⤊ 0⤋
2x - 6y + 1z
-( 7x + 3y - 4z)
-5x -9y + 5z
2007-12-24 17:21:09 · answer #7 · answered by stanschim 7 · 0⤊ 0⤋
U1 = -2x-6y+z
U2 = 3x+3y
U3 = U1-U2 = -5x-9y+z
2007-12-24 17:21:17 · answer #8 · answered by Nur S 4 · 0⤊ 1⤋
wat u do is put the like terms together:
-2x + 7x
6y - 3y
and
-4x + z
(its negative if thers a subtraction sign in front of it in the original problem because minus is the same as plus a negative #)
then u just work m from thr and ur answer is: 5x + 3y - 3z
you cannot work any further because none of the variables are the same.
--meh â¥
2007-12-24 17:21:56 · answer #9 · answered by Anonymous · 0⤊ 2⤋
(-- 2x -- 6y + z ) -- (7x + 3y -- 4z)
= -- 2x -- (7x) -- 6y -- (3y) + z -- (-- 4z)
= -- 2x -- 7x -- 6y -- 3y + z + 4z
= -- 9x -- 9y + 5z
2007-12-24 17:31:51 · answer #10 · answered by sv 7 · 0⤊ 0⤋