15-4w=7-2w?
回答 (11)
2008-03-15 6:15 pm
✔ 最佳答案
15 - 7 = - 2w + 4w8 = 2w
w = 4
2008-03-15 4:43 pm
Hey there!
Write the problem.
15-4w=7-2w
Add 2w to both sides of the equation.
15-2w=7
Subtract 15 on both sides of the equation.
-2w=-8
Divide -2 on both sides of the equation.
w=4
Check the answers.
15-4w=7-2w -->
15-4(4)=7-2(4) -->
15-16=7-8 -->
-1=-1, true
So, w=4 is a valid solution.
Hope it helps!
Write the problem.
15-4w=7-2w
Add 2w to both sides of the equation.
15-2w=7
Subtract 15 on both sides of the equation.
-2w=-8
Divide -2 on both sides of the equation.
w=4
Check the answers.
15-4w=7-2w -->
15-4(4)=7-2(4) -->
15-16=7-8 -->
-1=-1, true
So, w=4 is a valid solution.
Hope it helps!
2008-03-15 5:11 pm
15-7=-2w+4w
8=2w
8/2=2w/2
4=w
15-4(4)=7-2(4)
15-16=7-8
-1=-1
8=2w
8/2=2w/2
4=w
15-4(4)=7-2(4)
15-16=7-8
-1=-1
2008-03-15 5:07 pm
Solve:
15-4w = 7-2w
15-7 = -2w + 4w
8 = 2w
w = 8/2
w = 4
Check:
15-4w = 7-2w
15 -4(4) = 7-2(4)
15-16 = 7-8
-1 = -1
It makes sure that w= 4
15-4w = 7-2w
15-7 = -2w + 4w
8 = 2w
w = 8/2
w = 4
Check:
15-4w = 7-2w
15 -4(4) = 7-2(4)
15-16 = 7-8
-1 = -1
It makes sure that w= 4
2008-03-15 4:48 pm
15-4w=7-2w
+2w +2w
15-6w=7
-15 -15
6w= -22
then divide both sides by six
+2w +2w
15-6w=7
-15 -15
6w= -22
then divide both sides by six
2008-03-15 4:43 pm
W=4
15-4(4) = -1
7-2(4) = -1
-1=-1
15-4(4) = -1
7-2(4) = -1
-1=-1
2008-03-15 4:43 pm
15 = 7 + 2w
8 = 2w
w = 4
15 - 16 = 7 - 8 = -1
8 = 2w
w = 4
15 - 16 = 7 - 8 = -1
2008-03-15 4:42 pm
1. add 4w to both sides
15 - 4w + 4w = 7 - 2w + 4w
15 = 7 + 2w
2. subtract 7 from both sides
15 - 7 = 7 + 2w - 7
8 = 2w
3. divide both sides by 2
8/2 = 2w/2
w = 4
15 - 4w + 4w = 7 - 2w + 4w
15 = 7 + 2w
2. subtract 7 from both sides
15 - 7 = 7 + 2w - 7
8 = 2w
3. divide both sides by 2
8/2 = 2w/2
w = 4
2016-10-01 12:14 pm
X=9 Y=12 W=4 A=17.66666667 or 17 2/3 X=no answer (when you consider which you won't be able to divide by 0) X=3/4 X=4.8 X=10/6 or a million.66666667 or a million 2/3 you prefer to double verify the final 3 issues because of the fact I solved them Geometrically.
2008-03-15 6:31 pm
15 - 4w = 7 - 2w
2w - 4w = 7 - 15
-2w = -8
w = -8/-2
w = 8/2
w = 4
2w - 4w = 7 - 15
-2w = -8
w = -8/-2
w = 8/2
w = 4
收錄日期: 2021-05-01 10:14:07
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