Work following problems out step by step
5x + 1 = 21
2x = 5x -12
4 - (2x - 9)= -19
-3(2x + 1) = 2(x - 2)
-6x + 3 - 2x = 3 -
2007-10-10 00:26:29 · 8 answers · asked by Jae t 1 in Science & Mathematics ➔ Mathematics
5x + 1 = 21
5x = 20
x = 4
2x = 5x -12
12 = 3x
4 = x
4 -2x + 9 = -19
-2x = -32
x = -16
-3(2x + 1) = 2(x - 2)
-6x - 3 = 2x -4
1 = 8x
x =1/8
-6x + 3 - 2x = 3 - ??????
2007-10-10 01:26:43 · answer #1 · answered by Will 4 · 0⤊ 0⤋
5x + 1 = 21
5x = 21 -1
5x = 20
x = 20
-----
5
x = 4
2x =5x - 12
5x - 2x = 12
3x = 12
x = 12/3
x= 4
4 - (2x - 9) = -19
2x -9 = 19 + 4
2x = 9 + 23
x = 32/2
x = 16
-3(2x + 1) = 2(x - 2)
-6x -3 = 2x - 4
6x + 2x = 4 - 3
8x = 1
x = 1/8
-6x + 3 -2x = -3
-8x = -6
x = -6/-8
x = 3/4
2007-10-10 09:19:25 · answer #2 · answered by imieazmi 2 · 0⤊ 0⤋
5x + 1 = 21
5x = 21 -1
5x = 20
x = 20/5
x = 4
2x = 5x -12
2x -5x = -12
-3x = -12
x = -12 / -3
x = 4
4 -(2x -9) = -19
4 - 2x +9 = -19
13 -2x = -19
-2x = -19 -13
x = -32/ -2
x = 16
-3(2x +1) = 2(x-2)
-6x -3 = 2x -4
-3 +4 = 2x +6x
1 = 8x
1/8 = x
-6x + 3 - 2x = 3
-8x +3 = 3
-8x =0
x = 0
2007-10-10 07:35:55 · answer #3 · answered by Anonymous · 1⤊ 0⤋
5x + 1 = 21
5x = 20
x = 4
2x = 5x - 12
-3x = -12
x = 4
4-(2x - 9)= -19
4 - 2x + 9 = -19
-2x + 13 = -19
-2x = -32
x = 16
-3(2x+1) = 2(x-2)
-6x - 3 = 2x - 4
-8x = -1
x = 1/8
-6x + 3 - 2x = 3
-8x = 0
x = 0
note: please complete the equation on the last problem...
2007-10-10 07:33:29 · answer #4 · answered by Jocel B. Bartolay 2 · 0⤊ 1⤋
5x = 20
x = 4
3x = 12
x = 4
4 - 2x + 9 = - 19
- 2x = - 22
x = 11
- 6x - 3 = 2x - 2
8x = - 1
x = - 1 / 8
last question is incomplete
2007-10-10 15:50:35 · answer #5 · answered by Como 7 · 1⤊ 0⤋
5x + 1 = 21
5x = 20
x = 4
2x = 5x -12
3x = 12
x = 4
4 - (2x - 9)= -19
4x - 2x + 9 = - 19
2x = - 28
x = - 14
- 3(2x + 1) = 2(x - 2)
- 6x - 3 = 2x - 4
8x = 1
x = 1/8
- 6x + 3 - 2x = - 3
8x = 6
x = 3/4
2007-10-10 09:32:37 · answer #6 · answered by Jun Agruda 7 · 2⤊ 1⤋
1.5x + 1=21
5x=21-1
5x=20divide both sides by 5)
x=4
2.4
3.16
4.3/8
5.0
2007-10-10 07:39:52 · answer #7 · answered by mj 1 · 0⤊ 1⤋
4
4
-3
1 1/8
u forgot a number no i wont show the work so you can cheat off of it
2007-10-10 07:34:33 · answer #8 · answered by Hyjonx A 1 · 0⤊ 1⤋