6 - x/4 = 4(x+1) /9
the answer is supposed to be 8
2007-08-30 16:44:48 · 5 answers · asked by sa 3 in Science & Mathematics ➔ Mathematics
First, simplify it.
Multiply by 4:
24-x = 16(x+1)/9
Multiply by 9:
216-9x = 16(x+1)
Distribute the 16:
216-9x = 16x+16
Add 9x to both sides:
216 = 25x+16
Subtract 16 from both sides:
200 = 25x
Divide by 25:
x=8
2007-08-30 16:51:52 · answer #1 · answered by wyo_me 2 · 2⤊ 0⤋
6 - x/4 = 4(x+1) /9
6 - x/4 = (4x + 4 )/9
54 -9x/4 = 4x +4 ( x 9 both sides )
50 -9x/4 = 4x (-4 both sides )
50 = 4x +9x/4 ( +9x/4 )
200 = 16 x +9x ( x 4 )
200 = 25 x
200/25 = x
x = 8
check
6-8/4 = 4(8+1) /9
6-2 =4*9/9
4 = 4
the answer is 8 alright
2007-08-31 00:05:40 · answer #2 · answered by mark 6 · 1⤊ 1⤋
6 -x/4 = 4(x+1)/9
216 -9x = 16(x+1) (both sides times 36)
216-9x = 16x +16
200 = 25x
8 = x
2007-08-31 00:03:20 · answer #3 · answered by cartiphilus 4 · 1⤊ 0⤋
X by 36
216 - 9x = 16x + 16
25x = 200
x = 8
2007-08-31 04:31:46 · answer #4 · answered by Como 7 · 1⤊ 0⤋
6-x/4 = (4x+4) / 9
9 (6-x/4) = 4x+4
54-(9x/4) = 4x+4
50 = 4x + (9x/4)
50 = 16x/4 + 9x/4
50=(25x)/4
200 = 25x
x=8
2007-08-30 23:50:04 · answer #5 · answered by de4th 4 · 2⤊ 0⤋