1
_ x + 7 = 7
3
2007-12-13 09:15:11 · 10 answers · asked by =smokeL 1 in Science & Mathematics ➔ Mathematics
1/3x +7=7
Multiply all numbers by 3
(1/3x+7=7)
x+21=21
x=0
2007-12-13 09:18:20 · answer #1 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
X= 0
2007-12-13 17:29:12 · answer #2 · answered by Bee5000 2 · 0⤊ 0⤋
X = 3
2007-12-13 17:19:05 · answer #3 · answered by Anonymous · 0⤊ 2⤋
This is a great site:
http://www.purplemath.com/modules/
Here's what you need to do:
1/3 x + 7 = 7
.... subtract the 7 from the left and right sides
... 1/3 x = 0
now multiply both sides by 3/1 (the reciprocal of 1/3) .... and now it is:
......... X = 0 (anything multiplied by 0 is 0)
2007-12-13 17:22:45 · answer #4 · answered by ☺ . CIEL . ☺ 5 · 0⤊ 0⤋
x= 0
2007-12-13 17:18:57 · answer #5 · answered by Anonymous · 0⤊ 0⤋
x = 0
2007-12-13 17:18:27 · answer #6 · answered by Dogs Rule:) 3 · 0⤊ 0⤋
Step 1: Add -7 to each side. (Same as subtracting 7).
Step 2: Mult each side by 3.
Answer: x=0
2007-12-13 17:18:45 · answer #7 · answered by Howard Z 1 · 0⤊ 0⤋
subtracting 7 from both sides will leave: 1/3x=0
therefore x = 0
2007-12-13 17:18:45 · answer #8 · answered by Troy G 2 · 0⤊ 0⤋
That's a big DUH question anyway. You don't need to know any math at all. You can't ADD anything to 7 and still have 7. So the answer is ZERO.
2007-12-13 17:23:14 · answer #9 · answered by mbp 3 · 0⤊ 0⤋
x=0. x equals zero.
2007-12-13 17:18:53 · answer #10 · answered by mike t 1 · 0⤊ 0⤋