2007-07-27 09:54:26 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
10x - 5 = x - 4
9x = 1
x = 1 / 9
So - 4 is not a solution.
2007-07-27 11:15:15 · answer #1 · answered by Como 7 · 0⤊ 0⤋
All one has to do is substitute -4 for every x in the equation
7x - 5 + 3x = 6 + x - 10
7(-4) - 5 + 3(-4) = 6 + (-4) -10
-28 -5 - 12 = 2 - 10
-45 = -8
-4 is not a solution to the equation
2007-07-27 10:02:57 · answer #2 · answered by lovinghonestmother 1 · 1⤊ 0⤋
absolutely not. Let's look at each side of the equation seperately. They should come out to equal the same number.
Side A: 7x-5+3x= 7(-4)-5+3(-4)= -28-5+(-12)=-28-5-12=-45
Side B: 6+x-10= 6+(-4)-10= 2-10= -8
They are nowhere close to equal. So -4 is not a solution.
2007-07-27 09:59:56 · answer #3 · answered by Y-Knot 3 · 2⤊ 0⤋
7x - 5 +3x =6 + x -10
subtract both sides by 5
7x + 3x = 11 + x - 10
add 7x and 3x
10x = 11 + x - 10
substract x from both sides
9x = 11- 10
subtract 11 and 10
9x = 1
divide both sides by 9
1/9 is your answer so -4 is not the solution
2007-07-31 07:45:17 · answer #4 · answered by weeeelilbit 1 · 0⤊ 0⤋
7x-5+3x=6+x-10
+5 -x
7x+3x-x=6+5-10
9x=1
x=1/9 or .1111
2007-07-27 10:04:44 · answer #5 · answered by Jason K 1 · 0⤊ 0⤋
hmmm.. lets see...
7x-5+3x=6 +x-10
well first u have to combine the like terms....
10x-5= x-4
Then u subtract x from both sides
9x-5= -4
Then u add 5 to each side
9x=1
soooo... x = 1/9
2007-07-27 10:02:21 · answer #6 · answered by I <3 SKSK!! 2 · 0⤊ 1⤋
7x+3x-x=5+6-10
9x=1
x=1/9
2007-07-27 10:00:07 · answer #7 · answered by cocolovespurple 2 · 0⤊ 1⤋
That is not the answer I got. x=1/9
2007-07-27 10:00:31 · answer #8 · answered by shebeeast 1 · 0⤊ 1⤋
yup
2007-07-27 10:01:19 · answer #9 · answered by Anonymous · 0⤊ 1⤋
work it out yourself...
2007-07-27 09:58:39 · answer #10 · answered by Zappa 2 · 0⤊ 2⤋