5x + 4=29
3x +1=13
7x +3=17
8x -3=13
10x +9=12
2x -7= 10
2007-11-28 07:56:28 · 15 answers · asked by pussicus911 2 in Science & Mathematics ➔ Mathematics
1.
29-4=25/5=5
X=5
2.
13-1=12/3=4
X=4
3.
17-3=14/7=2
X=2
4.
13+3=16/8=2
X=2
5.
12-9=3/10=.3
X=.3
6.
10+7=17/2=8.5
X=8.5
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2007-11-28 09:59:18 · answer #1 · answered by ///M3 POWER! 3 · 0⤊ 0⤋
5x + 4 = 29 (subtract 4 from both sides)
5x + 4 -4 = 29 - 4
5x = 25 (divide both sides by 5)
5x/5 = 25/5
x = 5
3x + 1 = 13 (subtract 1 from both sides)
3x + 1 -1 = 13 - 1
3x = 12 (divide 3 into both sides)
3x/3 = 12/3
x = 4
7x + 3 = 17
7x + 3 - 3 = 17 -3
7x = 14
7x/7 = 14/7
x = 2
8x - 3 = 13
8x - 3 + 3 = 13 + 3
8x = 16
8x/8 = 16/8
x = 2
10x +9 = 12
10x + 9 - 9 = 12 - 9
10x = 3
10x/10 = 3/10
x = 3/10
2x - 7 = 10
2x - 7 + 7 = 10 + 7
2x = 17
2x/2 = 17/2
x = 8 1/2
2007-11-28 16:05:11 · answer #2 · answered by lenpol7 7 · 0⤊ 0⤋
5x + 4 = 29 x = 5
3x + 1 = 13 x = 4
7x + 3 = 17 x = 8
8x - 3 = 13 x = 2
10x + 9 = 12 x= 2/5
2x - 7 = 10 x = 2/3
2007-11-28 16:04:25 · answer #3 · answered by greenandred 3 · 0⤊ 0⤋
5x + 4=29
-4 -4
0 25
5x=25
/5 /5 x=5
3x +1=13
-1 -1
0 12
3x=12
/3 /3 x=4
7x +3=17
-3 -3
0 14
7x=14
/7 /7 x=2
8x -3=13
+3 +3
0 16
8x=16
/8 /8 x=2
10x +9=12
-9 -9
0 3
10x=3
/10 /10 x=0.3
2x -7= 10
+7 +7
0 17
2x=17
/2 /2 x=8.5 (8 1/2)
2007-11-28 16:07:56 · answer #4 · answered by K J 1 · 0⤊ 0⤋
1. x=5
5x5+4=29
25+4=9
2. x=4
3x4+1=13
12+1=13
3. x=2
7x2+3=17
14+3=17
4. x=2
8x2-3=13
16-3=13
5. x=.3 or 3/12 = 1/4
10x.3+9=
3+9=12
6. x=8.5 or 8 5/10 = 8 1/2
2x8.5-7=10
17-7= 10
2007-11-28 16:05:34 · answer #5 · answered by Psshh... 3 · 0⤊ 0⤋
5x+4=29
(-4)
5x=25
(/5)
x=5
3x+1=13
(-1)
3x=12
(/3)
x=4
7x+3=17
(-3)
7x=14
(/7)
x=2
8x-3=13
(+3)
8x=16
(/8)
x=2
10x+9=12
(-9)
10x=21
(/10)
x=2.1 or 2 1/10
2x-7=10
(+7)
2x=17
(/2)
x=8.5 or 8 1/2
If you don't get this stuff, talk to your teacher. It would be good if you could do this your self on tests, etc.
2007-11-28 16:04:29 · answer #6 · answered by MainelyAs11 2 · 1⤊ 0⤋
You need to find the value of x.
5x+4=29
5x=29-4
5x=25
x=25 divided by 5
x = 5
Do the same for all your other questions
2007-11-28 16:09:30 · answer #7 · answered by suer 2 · 0⤊ 0⤋
Isolate the x term, then isolate the x
5x=25. x=5
3x=12, x=4
7x=14,x=2
8x=16, x=2
10x=3
x=3/10
2x=17,x=17/2
2007-11-28 16:00:47 · answer #8 · answered by mom 7 · 0⤊ 0⤋
x = 29-4 divided by 5
x = 13-1 divided by 3
x = 17-3 divided by 7
x = 13+3 divided by 8
x = 12-9 divided by 10
x = 10+7 divided by 2
:) it quitee easy reeli .
hopee you understand it now :).
2007-11-28 16:05:46 · answer #9 · answered by Anonymous · 0⤊ 0⤋
All you have to do is take the expression and since their is only one term with a variable(letter) in it subtract, the number before the = sign then divide and then solve!
Here are the answers though:
1)x=5
2)x=4
3)x=2
4)x=2
5)x=.3
6)x=8.5
2007-11-28 16:09:06 · answer #10 · answered by ¸.•*´`*♥To0DaMnFaBuL0uS♥*´`*•.¸ 4 · 0⤊ 0⤋