8x - 1 = -4x + 23 what does x equal?

2008-06-23 3:11 pm

回答 (12)

2008-06-23 3:20 pm
✔ 最佳答案
8x+4x=24
12x=24
x=2
2008-06-23 3:23 pm
Add 4x to both side

8x + 4x - 1 = -4x + 4x + 23

12x - 1 = 23

Add 1 to both sides

12x -1 + 1 = 23 + 1

12x = 24

Divide both sided by 12

12x/12 = x = 24/12 = 2
參考: Longtime college math teacher
2008-06-23 3:21 pm
12x = 24
x = 2
2008-06-23 3:21 pm
8x + 4x = 23 + 1
12x = 24
x = 24 / 12
x = 2
2008-06-23 3:19 pm
change the order ,change the sign after moving:
8x +4x = 23 +1
12x = 24
x = 24/12 = 2
2008-06-23 3:18 pm
8x-1= -4x+23
solution,
8x+4x= 23+1,
12x =24,
x= 24/12,
x=2
參考: internet
2008-06-23 3:17 pm
8x - 1 = -4x + 23
8x + 4x = 1 + 23
12x = 24
x = 24/12
x = 2
2008-06-23 3:17 pm
8x - 1 = -4x + 23
by transposition....
8x + 4x = 23 +1
12x = 24
x = 2
2008-06-23 3:16 pm
2
2008-06-23 3:16 pm
8x-1=-4x+23
12x=24
x=24/12
x=2


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