can you answer any of these??
1) 4x + 3 =2x + 11
2) 5x + 7 + 3x +11
3) 2x - 4 = 5x -19
4) 6x - 2 = 3x + 10
5) 7x + 4 +10x - 20
6) 9x + 7 = 15 + 1
7) 8x + 3 = 2x + 21
8) 3x - 6 = 10 - x
9) 2x -3 = 3 - 4x
10) 3x + 4 =18 - 4x
11) 10 - 4x =3x + 3
12) 9x - 3 = 19 - 2x
2007-10-31 06:58:29 · 21 answers · asked by Rushton 3 in Science & Mathematics ➔ Mathematics
Sure. I'll show you how to do the first one:
4x+3=2x+11
Your first step is to group like terms, so you want to move all the x's to one side of the equation and all the whole numbers to the other.
4x-2x=11-3
(remember when you move a part of the equation to the other side, the sign changes)
Then, just work the problem:
2x=8
Divide both sides by 2, so you get:
x=4
2007-10-31 07:03:11 · answer #1 · answered by Dachy 3 · 1⤊ 2⤋
1) 4x+ 3 = 2x +11
4x - 2x = 11 - 3
2x = 8
x = 8 / 2
x = 4
2) 5x + 7 + 3x + 11
8x + 18
2(4x + 9)
3) 2x - 4 = 5x - 19
2x - 5x = -19 + 4
-3x = -5
x = -5 / -3
x = 5 / 3
4) 6x - 2 = 3x + 10
6x - 3x = 10 +2
3x = 12
x = 4
5) 7x + 4 + 10x - 20
17x - 16
6) 9x + 7 = 15 + 1
9x = 15 + 1 - 7
9x = 9
x = 1
7) 8x + 3 = 2x + 21
8x - 2x = 21 - 3
6x = 18
x = 3
8) 3x - 6 = 10 - x
3x + x = 10 + 6
4x = 16
x = 4
9) 2x - 3 = 3 - 4x
2x + 4x = 3 + 3
6x = 6
x = 1
10) 3x + 4 = 18 - 4x
3x + 4x = 18 - 4
7x = 14
x = 2
11) 10 - 4x = 3x + 3
- 4x - 3x = 3 -10
- 7x = -7
x = 1
12) 9x - 3 = 19 - 2x
9x + 2x = 19 + 3
11x = 22
x = 2
2007-11-02 22:29:05 · answer #2 · answered by Rayan Ghazi Ahmed 4 · 0⤊ 0⤋
1) 4x + 3 =2x + 11
2) 5x + 7 + 3x +11
3) 2x - 4 = 5x -19
4) 6x - 2 = 3x + 10
5) 7x + 4 +10x - 20
6) 9x + 7 = 15 + 1
7) 8x + 3 = 2x + 21
8) 3x - 6 = 10 - x
9) 2x -3 = 3 - 4x
10) 3x + 4 =18 - 4x
11) 10 - 4x =3x + 3
12) 9x - 3 = 19 - 2x
1) x = 4
2) x = 2
3) x = 5
4) x = 4
5) x = 8
6) x = 1
7) x = 3
8) x = 4
9) x = 1
10) x = 2
11) x = 1
12) x = 2
2007-10-31 14:09:11 · answer #3 · answered by $million$ 1 · 0⤊ 2⤋
(1). 4x+3=2x+11
4x-2x=11-3
2x=8
x therfore=4
(2) 5x+7+3x+11
5x+3x+11+7
=8x+19
(3) 2x-4=5x-19
2x-5x=-19+4
-3x=-15
therfore x=5
(4) 6x-2=3x+10
6x-3x=10+2
3x=12
x=4
(5) 7x+4+10x-20
7x+10x+4-20
17x-16
(6) 9x+7=15+1
9x=15+1-7
9x=16-7
x=1
(7) 8x+3=2x+21
8x-2x=21-3
6x=18
x=3
(8) 3x-6=10-x
3x+x=10+6
4x=16
x=4
(9) 2x-3=3-4x
2x+4x=3+3
6x=6
x=1
(10) 3x+4=18-4x
3x+4x=18-4
7x=14
x=2
(11) 10-4x=3x+3
10-3=3x+4x
7=7x
x=1
(12) 9x-3=19-2x
9x+2x=19+3
11x=22
x=2
(11)
2007-11-01 08:28:11 · answer #4 · answered by selina m 1 · 0⤊ 0⤋
1) 2x=8 x=4
2) 8x= -18 x= -18/8 x= -9/4
3) 3x=15 x=5
4) 3x=12 x=4
5) 17x=16 x=17/16
6) 9x=9 x=1
7) 6x=18 x=3
8) 4x= -4 x= -1
9) 6x=6 x=1
10) 7x=14 x=2
11) 7x=7 x=1
12) 11x=22 x=2
2007-10-31 14:13:24 · answer #5 · answered by Anonymous · 0⤊ 1⤋
1) 4x + 3 =2x + 11
x= 4
2) 5x + 7 + 3x +11
No
3) 2x - 4 = 5x -19
x = 5
4) 6x - 2 = 3x + 10
x = 8/3
5) 7x + 4 +10x - 20
No
6) 9x + 7 = 15 + 1
x = 1
7) 8x + 3 = 2x + 21
x = 3
8) 3x - 6 = 10 - x
x = 4
9) 2x -3 = 3 - 4x
x = 1
10) 3x + 4 =18 - 4x
x = 2
11) 10 - 4x =3x + 3
x = 1
12) 9x - 3 = 19 - 2x
x = 2
2007-10-31 14:03:26 · answer #6 · answered by Matt 3 · 3⤊ 2⤋
1. 4x+3=2x+11. 4x-2x=11-3. 2x=8. x=4.answer
2.5x+7+3x+11. 8x+14=0. x=1 6/8. x=1.75.answer
3. 2x-4=5x-19. 2x-5x=-19+4. -3x=-15. x=5.answer
4. 6x-2=3x+10. 6x-3x=10+2. 3x=12. x=4.answer
5. good luck with the rest.
2007-11-01 00:06:15 · answer #7 · answered by tapsmat1 2 · 0⤊ 0⤋
1)
4x + 3 = 2x + 11
or
2x + 3 = 11
therefore 2x = 8 thus x = 4
2)
5x + 7 = 3x +11
or
2x + 7 = 11
thus 2x = 4 so x = 2
Good luck with the rest !
2007-10-31 14:02:08 · answer #8 · answered by Well, said Alberto 6 · 1⤊ 2⤋
yes but ill tell you the method:
isolate the x in each:
whenever you send a term to the other side of the "=" sign, change it's sign. for example: in (1)
4x+3=2x+11
4x - 2x + 3 = 11
2x +3 = 11
2x = 11 - 3
2x = 8
in case of multiplication, divide:
x = 8/2
x=4
2007-10-31 14:02:57 · answer #9 · answered by umer 2 · 1⤊ 2⤋
1) x = 4
2) x = 2
3) x = 5
4) x = 4
5) typo? x = 8
6) typo? 15x? x = 1
7)x = 3
8)x = 4
9) x = 1
10)x = 2
11)x = 1
12) x = 2
2007-10-31 14:04:15 · answer #10 · answered by Anonymous · 1⤊ 1⤋