1. 4(x+1) - 3x = 1
A)-2
B)-1
C)-4
D)-3
2. 2/3x + 1/2 = 11/18
A)1/4
B)1/7
C)1/8
D)1/6
3. 4(x+2) + 2(x-4)
A)7x
B)6x
C)5x
D)8x
2007-03-28 09:09:44 · 7 answers · asked by tinker_bell103192 1 in Education & Reference ➔ Homework Help
x is a variable. A variable is what you are trying to solve.
2007-03-28 09:14:57 · answer #1 · answered by Curious one 2 · 0⤊ 0⤋
1. D
4(x+1)-3x=1
4x+4-3x=1
x+4=1
-4=-4
x=-3
2. D
2/3x+1/2=11/18
-1/2=1/2
2/3x=1/9
*divide 2/3 by 1/9
x=1/6
3. B
4(x+2)+2(x-4)
4x+8+2x-8
*eights cancel out*
6x
2007-03-28 16:18:01 · answer #2 · answered by =] 3 · 1⤊ 0⤋
1) 4x+4-3x=1
x+4=1
x+4-4=1-4
x=-3
the answer is d
2) 2/3x+1/2=11/18-1/2
2/3x=1/9
x=2/3*3/2=1/9*3/2
x=3/18=1/6
x=1/6
the answer is d
3) distribute the 4
4(x+2)+2(x-4)
4x+8+2x-8
=6x
the answer is b
2007-03-28 16:25:11 · answer #3 · answered by Anonymous · 0⤊ 0⤋
1. D
4x+4-3x=1
x+4 = 1
x=4-4=1-4
x=-3
2.D
2/3x +1/2=11/18 multiple by 18
18(2/3x+1/2)=18(11/18)
36/3x+18/2=11
12x+9=11
12x=11-9
12x=2
x=2/12
x=1/6
3.B (This one is strange--there is no = in it???)
4(x+2) + 2(x-4)
4x+8+2x-8
6x
2007-03-28 16:22:59 · answer #4 · answered by Lillian L 5 · 1⤊ 0⤋
4x+4-3x=1
x+4=1
x+4-4=1-4
x=-3
2/3x + 1/2=11/18
2/3x+1/2=9/18=11/18-9/18=2/18=1/9
2/3x=1/9
2/3(3/2)=1/9(3/2)=1/6
4x+8+2x-8
6x+0=6x
2007-03-28 16:34:48 · answer #5 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
1 = -3
3 = 6x
2007-03-28 16:15:06 · answer #6 · answered by beckyvincenzes 2 · 0⤊ 0⤋
d, d, b
2007-03-28 16:15:17 · answer #7 · answered by heavenly_97 2 · 1⤊ 0⤋