what is 6x+4=5x
and 4x-(3x+7)=0. solve for x
math question!help solving?
2009-07-05 4:04 pm
回答 (8)
2009-07-05 4:08 pm
✔ 最佳答案
x= -4 (I)x= 7 (II)
2009-07-05 11:13 pm
Q1:
6x + 4 = 5x
6x - 5x = - 4
x = - 4
Answer: x = - 4
Proof:
6(- 4) + 4 = 5(- 4)
- 24 + 4 = - 20
- 20 = - 20
Q2:
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7
Answer: x = 7
Proof:
4(7) - (3[7] + 7) = 0
28 - (21 + 7) = 0
28 - (21 + 7) = 0
28 - (28) = 0
28 - 28 = 0
0 = 0
6x + 4 = 5x
6x - 5x = - 4
x = - 4
Answer: x = - 4
Proof:
6(- 4) + 4 = 5(- 4)
- 24 + 4 = - 20
- 20 = - 20
Q2:
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7
Answer: x = 7
Proof:
4(7) - (3[7] + 7) = 0
28 - (21 + 7) = 0
28 - (21 + 7) = 0
28 - (28) = 0
28 - 28 = 0
0 = 0
2009-07-06 12:28 am
1)
6x + 4 = 5x
6x - 5x = -4
x = -4
2)
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7
6x + 4 = 5x
6x - 5x = -4
x = -4
2)
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7
2009-07-05 11:24 pm
6x+4=5x
6x-5x=-4
x=-4 answer//
4x-(3x+7)=0.
4x-3x-7=0
x-7=0
x=7 answer//
6x-5x=-4
x=-4 answer//
4x-(3x+7)=0.
4x-3x-7=0
x-7=0
x=7 answer//
2009-07-05 11:22 pm
6x + 4 = 5x
x = - 4.
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7.
x = - 4.
4x - (3x + 7) = 0
4x - 3x - 7 = 0
x = 7.
2009-07-05 11:14 pm
6x+4=5x
6x-5x=-4
x=-4
4x-(3x+7)=0
4x-3x-7=0
x-7=0
x=7
6x-5x=-4
x=-4
4x-(3x+7)=0
4x-3x-7=0
x-7=0
x=7
2009-07-05 11:13 pm
1. 6x+4=5x
Subtract 5x from both sides
6x - 5x+ 4 = 0
x + 4 = 0
Subtract 4 from both sides
x + 4 - 4 = 0 - 4
x = - 4 (Answer)
2. 4x - (3x + 7)=0.
4x -3x -7 = 0
x - 7 = 0
Add 7 to both sides
x + 7 - 7 = 0 + 7
x = 7 (Answer)
Subtract 5x from both sides
6x - 5x+ 4 = 0
x + 4 = 0
Subtract 4 from both sides
x + 4 - 4 = 0 - 4
x = - 4 (Answer)
2. 4x - (3x + 7)=0.
4x -3x -7 = 0
x - 7 = 0
Add 7 to both sides
x + 7 - 7 = 0 + 7
x = 7 (Answer)
2009-07-05 11:10 pm
bring the 5x to the left side of the equation and move the 4 to the right side this changes their sign
6x - 5x = -4
x = -4
next one
4x - 3x - 7 = 0
x -7 = 0
x = 7
6x - 5x = -4
x = -4
next one
4x - 3x - 7 = 0
x -7 = 0
x = 7
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