2007-07-04 07:42:05 · 7 answers · asked by bloodyheartb5 1 in Science & Mathematics ➔ Mathematics
x - (2x - 8) = 3x - 2(x + 5)
Distribute
x - 2x + 8= 3x - 2x -10
Group like terms
-x + 8 = x - 10
Add x + 10 to both sides
18 = 2x
Divide both sides by 9
x = 9
Check your answer:
9 - (2*9 - 8) = 3*9 - 2(9 + 5)
9 - 18 + 8 = 27 - 18 -10
-1 = -1
2007-07-04 07:45:34 · answer #1 · answered by whitesox09 7 · 0⤊ 1⤋
x - (2x - 8) = 3x - 2(x + 5)
x - 2x + 8 = 3x - (2x + 10)
- x + 8 = 3x - 2x - 10
- x + 8 = x - 10
- x + 8 - x = x - 10 - x
- 2x + 8 = - 10
- 2x + 8 - 8 = - 10 - 8
- 2x = - 18
- 2x / - 2 = - 18 / - 2
x = - 18 / - 2
x = 9
- - - - - - - - -s-
2007-07-04 09:52:18 · answer #2 · answered by SAMUEL D 7 · 2⤊ 0⤋
x - 2x + 8 = 3x -2x -10
-x + 8 = x - 10
8 + 10 = 2x
18/2 = 2x/2
9 = x
2007-07-04 07:51:48 · answer #3 · answered by ninesunz 3 · 0⤊ 0⤋
x - 2x + 8 = 3x - 2x - 10
- x + 8 = x - 10
18 = 2x
x = 9
2007-07-07 05:35:44 · answer #4 · answered by Como 7 · 0⤊ 0⤋
x - (2x - 8) = 3x - 2(x + 5)
x-2x+8=3x-2x-10
x-2x-3x+2x=-10-8
-2x= -18
x=9
2007-07-04 07:50:51 · answer #5 · answered by zohair 2 · 0⤊ 0⤋
x=9
2007-07-04 10:06:41 · answer #6 · answered by mathewqarlati 1 · 1⤊ 1⤋
x - (2x - 8) = 3x - 2(x + 5)
x-2x+8 = 3x -2x -10
2x = 18
x=9
2007-07-04 07:45:27 · answer #7 · answered by sweet n simple 5 · 0⤊ 2⤋