what is the answer to 18 - 4k = -10 - 4k (eighteen minus fourK equals negative ten minus fourK.) i have to solve for K.
2007-08-21 03:41:46 · 13 answers · asked by ♥ alexa ♥ 2 in Science & Mathematics ➔ Mathematics
18 - 4k = -10 - 4k , This cannot be solved
If the question was:
1) 18 - 4k = -(10 - 4k )
18 - 4k = -10 + 4k
Combining similar terms
18 + 10 = 4k + 4k
28 = 8k
k = 28/8
k = 7/2 or k = 3.5
1) 18 + 4k = -10 - 4k
18 + 4k = -10 - 4k
4k + 4k = -10 -18
8k = -28
k = -28/8
k = -7/2 or k = -3.5
3) 18 - 4k = -10 + 4k
same as 1)
2007-08-21 03:55:10 · answer #1 · answered by Mika 4 · 0⤊ 0⤋
No solution.
This cannot be a true statement because you can never have 18 minus "something" being equal to -10 minus "something." Obviously, if the "somethings" are the same, this doesn't work. You can also do some quick algebra to show that this is the case:
18 - 4k = -10 - 4k
==> add 4k to both sides
18 - 4k + 4k = -10 - 4k + 4k
==> combine like terms, which cancels out all k's
18 = -10 ... NOT TRUE
2007-08-21 10:46:50 · answer #2 · answered by C-Wryte 4 · 1⤊ 0⤋
18 - 4k = -10 - 4k
18 + 10 = -4k + 4k
28 = k
i think thats the answer
2007-08-21 10:49:44 · answer #3 · answered by kerry 2 · 0⤊ 2⤋
it's impossible to solve.. look:
if we'll solve that,
> 18 - 4k = -10 - 4k
> -4k + 4k = -10 - 18
look... it's impossible
2007-08-21 10:50:52 · answer #4 · answered by Anonymous · 0⤊ 0⤋
18 - 4k = -10 -4k so
-4k + 4k = -10 -18
0 k = -28
so -28/0 it
K is 0
2007-08-21 10:49:38 · answer #5 · answered by Anonymous · 0⤊ 1⤋
18 - 4k = - 10 - 4k
0 = - 28
k cannot be determined because the equation is defective.
2007-08-25 06:26:26 · answer #6 · answered by Jun Agruda 7 · 3⤊ 0⤋
impossible , no solution if youadd 4k in both sides then you found 18 =-10 which is false
2007-08-21 10:48:24 · answer #7 · answered by maussy 7 · 1⤊ 0⤋
If you were to simplify it you would get 18 = -10. This statement is in-equal so there is no solution. Just show your work and write no solution next to it.
2007-08-21 10:49:17 · answer #8 · answered by dudas_91 4 · 1⤊ 0⤋
i'm not sure if you can do this but:
18-4k=-10-4k
18-4k+4k=10
-4k+4k=-8
k(-4+4)=-8
k=-8/-4+4
2007-08-21 10:49:50 · answer #9 · answered by bendy_jo_jo 2 · 0⤊ 1⤋
-28
2007-08-21 10:56:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋