5-12(2-x)=6
3-7d=5d+4
5x-2(2-x)=9-(4x+2)
SHOW ALL WORK
2007-09-30 11:21:48 · 10 answers · asked by Indie 2 in Science & Mathematics ➔ Mathematics
5-24+12x=6
12x=25
x=2 1/25
3-7d=5d+4
-1=12d
d= -1/12
5x-4+2x=9-4x-2
7x-4=7-4x
11x=11
x=1
2007-09-30 11:27:41 · answer #1 · answered by chasrmck 6 · 0⤊ 0⤋
OK -
5-12(2-x) =6
5 -24 +2x =6
-19+12x=6
12x=25
x=2 1/12
Check
5- 12(2- 2 1/12)=6 ??
5 - 12(-1/12) =6
5+1 =6 YES!
3-7d =5d=4
-12d =1
d =-1/12
Check
3 - 7(-1/12) = 5(-1/12) +4 ??
3 + 7/12 = -5/12 +4
3 7/12 = 3 7/12 YES!!
5x -2(2-x) = 9-(4x+2)
5x -4+2x = 7 -4x
7x -4 =7-4x
11x =11
x = 1
Check
5 (1) - 2(2-1) = 9-(4(1) +2) ??
5 - 2 = 9 -(4 +2)
3 = 3 YES!!
Hope this helps
2007-09-30 18:40:10 · answer #2 · answered by pyz01 7 · 0⤊ 0⤋
5 - 12(2-x) = 6
â 5 - 24 + 12x = 6 â 12x = 25 â x = 25/12
3-7d=5d+4
â 12d = -1 â d = -1/12
5x-2(2-x)=9-(4x+2)
â 5x - 4 + 2x = 9 - 4x - 2 â 11x = 11 â x = 1
2007-09-30 18:35:58 · answer #3 · answered by ehsan 1 · 0⤊ 0⤋
5-12(2-x)=6 => 5-24+12x=6 => 12x = 25 => x = 25/12
3-7d=5d+4 => 12d = -1 => d = -1/12
5x-2(2-x)=9-(4x+2) => 5x-4+2x=9-4x-2 => 11x = 11 => x = 1
2007-09-30 18:30:22 · answer #4 · answered by yhoormz 2 · 0⤊ 0⤋
5 - 12(2-x) = 6
5 - 24 + 12x = 6
-24 + 12x = 1
12x = 25
x = 25/12 (or 2 1/12)
Proof:
5 - 12(2- [2 1/12]) = 6
5 - 12(-1/12) = 6
5 - -1 = 6
6 = 6
--------------------------------
5 - 7d = 5d + 4
1 - 7d = 5d
1 = 12d
d = 1/12
Proof:
5 - 7[1/12] = 5[1/12] + 4
5 - 7/12 = 5/12 + 4
4 5/12 = 4 5/12
---------------------------------
5x - 2(2-x) = 9 - (4x+2)
5x - 4 + 2x = 9 - 4x - 2
7x - 4 = 7 - 4x
7x = 11 - 4x
11x = 11
x = 1
Proof:
5[1] - 2(2 - [1]) = 9 - (4[1] + 2)
5 - 2 = 9 - (4 + 2)
3 = 9 - 6
3 = 3
2007-09-30 18:48:27 · answer #5 · answered by David H 2 · 0⤊ 0⤋
5 - 12(2-x) = 6
5 - 24 + 12x = 6
12x = 6 - 5 + 24 = 25
x = 25/12
3 - 7d = 5d + 4
3 - 4 = 5d + 7d = 12 d
12d = -1
d = -1/12
Do the third one on similar lines.
2007-09-30 18:28:20 · answer #6 · answered by Swamy 7 · 0⤊ 0⤋
OK -
5-12(2-x)=6
-12(2-x)=6-5
-24+12x=1
12x=25
x=25/12
3-7d=5d+4
-7d=5d+4-3
-7d=5d+1
-12d=1
d=1/(-12)
d= -1/12
5x-2(2-x)=9-(4x+2)
5x-4+2x=9-4x-2
7x-4=7-4x
7x=7-4x+4
7x+4x=7+4
11x=11
x=11/11
x=1
2007-09-30 18:39:37 · answer #7 · answered by skeptik 7 · 0⤊ 0⤋
5-12(2-x)=6
first u distribute so -12x2=-24 and -12time-x=12x so
5-24+12x=6 simmplify.
-19+12x=6
add 19 to both sides
12x=25
divide both sides by 12
x= 0.48
3-7d=5d+4
add 7d to both sides
3=12d+4
subtract 4 from both sides
-1=12d
divide both sides by 12
d= -1/12
5x-2(2-x)=9-(4x+2)
distribute the 2
-2x2=-4
-2time -x= 2x
so 5x-4+2x=9-4x-2
simplify
7x-4=7-4x
add 4x to both sides
11x-4=7
add 4 to both sides
11x=11
divide by 11
x=1
2007-09-30 18:33:00 · answer #8 · answered by oOhLalaWhaTaBeautiFulLEaf 1 · 1⤊ 0⤋
1. 5-12(2-x)=6
5-24+12x=6
-19+12x=6
12x=25
x=25/12
2. 3-7d=5d+4
-12d=1
d= -1/12
3. 5x-2(2-x)=9-(4x+2)
5x-4+2x=9-4x-2
7x-4=7-4x
11x=11
x=1
2007-09-30 18:43:57 · answer #9 · answered by needhelp 2 · 0⤊ 0⤋
yes i can
2007-09-30 18:27:08 · answer #10 · answered by Dead 4 · 0⤊ 1⤋