2007-04-22 13:36:23 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
15 is not a solution
Start the equation:
8-x=7
8=7+x (add x to both sides)
1=x (subtract 7 from both sides)
2007-04-22 13:41:26 · answer #1 · answered by CrazyGirl916 1 · 1⤊ 0⤋
No 1 is. (8-7 = 1)
15 is a solution to 8-x = -7.
2007-04-22 21:23:37 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋
no, it's x=1
2007-04-22 20:44:04 · answer #3 · answered by I ♥ volleyball 2 · 0⤊ 0⤋
nope its 1.
If you mius 8 from both sides you get
-x = -1
then you drop the minus from each side, because the cancel eachother so you have x=1.
if you do it the other way and start by adding x to each side you get 8 = 7 + x, then just go one to minus 7 from both of them.
again you wind up with x = 1
2007-04-22 20:42:29 · answer #4 · answered by police patroll 1 · 1⤊ 0⤋
it's 1
because
-x=7-8
-x=-1
x=1
2007-04-22 20:40:05 · answer #5 · answered by Anonymous · 1⤊ 0⤋
well, plug 15 into x and see what you get
8 - 15 = -7 does not equal 7
So, no, it isn't
2007-04-22 20:39:27 · answer #6 · answered by neo85888 1 · 0⤊ 0⤋
no, that would make -7
1 is the solution
2007-04-22 20:40:04 · answer #7 · answered by leo 6 · 1⤊ 0⤋
no
2007-04-22 20:39:42 · answer #8 · answered by Brainiac 2 · 1⤊ 0⤋