I hope your good with symplifiying expressions,
(7x-12)-(9x+15)
-4(3x+y+2)
-3(5c-2x+4)
2007-04-26 02:13:08 · 10 answers · asked by bryan3X6X0 6 in Science & Mathematics ➔ Mathematics
(7x - 12) - (9x + 15)
7x - 12 - 9x - 15
- 2x - 27
- - - - - - - - - -s-
2007-04-26 03:05:54 · answer #1 · answered by SAMUEL D 7 · 3⤊ 0⤋
COMBINE LIKE TERMS
7x - 9x
-12 - 15
-2x - 27
-4(3x+y+2) is easy
(-4 *3x) + (-4 * y) + (-4 * 2)
(-12x) + (-4y) + (-8)
-12x -4y - 8
then I would add 4 y to each side giving me
4y= -12x-8
then I'd divide by 4 giving me
y = -3x-2
-3(5c-2x+4)
this is pretty much the same thing as the last one
(-3*5c)+(-3*-2x)+(-3*4)
-15c + 6x -12
I don't know if you want it to be in terms of x or c, but you can factor out a 3 from there if you wish
2007-04-26 09:27:20 · answer #2 · answered by l0uislegr0s 3 · 0⤊ 0⤋
(7x-12) - (9x+15)
= 7x -12 - 9x - 15
= -2x - 27
-4(3x+y+2)
= -12x - 4y - 8
-3(5c - 2x + 4)
=-15c + 6x - 12
2007-04-26 09:23:30 · answer #3 · answered by helping_people 2 · 0⤊ 0⤋
(7x-12)-(9x+15)-4(3x+y+2)-3(5c-2x+4)
= -2x -27 - 12x - 4y - 8 -15c + 6x - 12
= -8x - 47 - 4y - 15c
= - (8x + 47 + 4y + 15c)
if they were supposed to be individual equations... :-
(7x-12)-(9x+15)
= 7x - 12 - 9x - 15
= -2x - 27 = -(2x+27)
-4(3x+y+2)
= -12x - 4y - 8
-3(5c-2x+4)
= -15c + 6x - 12
2007-04-26 09:20:47 · answer #4 · answered by absentmindednik 3 · 0⤊ 0⤋
(7x-12)-(9x+15)-4(3x+y+2)-3(5c-2x+4)=
=7x - 12 - 9x - 15 - 12x -4y -8 -15c + 6x -12 = 8x - 4y - 15c - 47
2007-04-26 09:20:21 · answer #5 · answered by Tequilla $hot 2 · 0⤊ 0⤋
1. ( 7x - 12) - (9x + 15 )
7x - 12 - 9x - 15
-2x - 27
2. -12x - 4y - 8
3. -15c + 6x - 12
2007-04-26 09:25:07 · answer #6 · answered by Anonymous · 0⤊ 0⤋
-2x-27
the negative sign distributes over the prenthases:
7x-12-9x-15
combine
7x-9x
and then combine
-12-15
your final answer:
-2x-27
ta-da.
2007-04-26 09:22:25 · answer #7 · answered by Anonymous · 0⤊ 0⤋
-2x- 27
-12x -4y- 8
-15c +6x- 12
im dead serious. im really good at math
2007-04-26 09:21:37 · answer #8 · answered by ♠Hoody♠™ 3 · 0⤊ 0⤋
i dont know but i would help you i suck at math too but you could try googling it.. that is the most help i can give you sorry
2007-04-26 09:24:46 · answer #9 · answered by aleex;D 1 · 0⤊ 0⤋
i suck 2
2007-04-26 09:15:58 · answer #10 · answered by dodi 3 · 0⤊ 0⤋