2006-09-13 16:28:35 · 18 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
SomeGuy lost a minus sign somehwere along the way and Greasy copied his wrong answer. KK has it right.
Just plug in -7/2 for x and see:
25 = 2 (3 * (-7/2) + 2) - 12 * (-7/2)
25 = -21 + 4 + 6 * 7
25 = -21 + 46
25 = 25
Yes!!!
Any answers that are not -7/2 or -3.5 are wrong. Most wrong answers result from a lost minus sign, but Emily's wrong answer is unique.
2006-09-13 16:36:14 · answer #1 · answered by ? 6 · 0⤊ 0⤋
correct the following i provides you step by employing employing step education. First you initiate by employing employing distributing both into the quantity. So 2 x 3x = 6x and a couple of x 2 = 4 we are stuck with 25=6x + 4 - 12x We then substitute round the priority 25=4 + 6x - 12x We then pull out the x to have x(6-12) Then which will equivalent x(-6) everybody do not overlook that equals -6x So we then have 25=4 - 6x then we subtract 4 from both section 25 - 4 = 4 -4 - 6x 21 = -6x then multiply both section by employing employing - a million/6 so 21 x -a million/6 = -21/6 so we've -21/6 = x
2016-11-26 22:25:31 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Here I will give you step by step instructions.
First you begin by distributing the 2 into the quantity.
So 2 x 3x = 6x and 2 x 2 = 4
We are stuck with 25=6x + 4 - 12x
We then switch around the problem
25=4 + 6x - 12x
We then pull out the x to have x(6-12)
Then that will equal x(-6)
We know that equals -6x
So we then have 25=4 - 6x
then we subtract 4 from each side
25 - 4 = 4 -4 - 6x
21 = -6x
then multiply both sides by - 1/6
so 21 x -1/6 = -21/6
so we have -21/6 = x
2006-09-13 16:43:01 · answer #3 · answered by xXxSmartGuyxXx 3 · 1⤊ 0⤋
So easy ..
2(3x+2) - 12x = 25
6x + 4 - 12x = 25
6x + 4 = 25
6(3.5) + 4 = 25
21 + 4 = 25
x = 3.5
Yaaaaaay ..
2006-09-13 16:41:26 · answer #4 · answered by Duda .. 3 · 0⤊ 0⤋
You are really trying to get us to do your homework for you, aren't ya? It's a good thing I enjoy doing these...
25 = 2(3x + 2) - 12x
25 = 6x + 4 - 12x
25 = 4 - 6x
25 - 4 = 4 - 6x - 4
21 = -6x
21 / -6 = -6x / -6
-3.5 = x
2006-09-13 17:20:41 · answer #5 · answered by ashcatash 5 · 0⤊ 0⤋
first, distribute the 2 into the brackets...
25=6x+4-12x
subtract 4 from each side
21=6x-12x
combine like terms
21=-6x
divide both sides by -6
-21/6=x
simplify
-3.5=x
2006-09-13 16:40:31 · answer #6 · answered by tplanningstages 1 · 1⤊ 0⤋
first you have to expand the information in the parentheses (in this case it means that you have to multiply everything inside the parentheses by 2)
which gives you
25=6x+4-12x
then you add the x's together
which gives you
25=4-6x
then you need to get rid of the four from the side that the x is on, you do this by adding -4 to both sides
which gives you
21=-6x
you then divide both sides by -6 in order to get the x by itself
so the answer is
21/-6
which reduces to be
7/-2
2006-09-13 16:39:14 · answer #7 · answered by Anonymous · 1⤊ 0⤋
x=21/6
2006-09-13 16:37:26 · answer #8 · answered by missy 1 · 0⤊ 1⤋
you expand the brackets first and then collect the like terms:
25 = (6x + 4) -12x
25 = -6x + 4
21 = 6x
x = 21/6
x = 3.5
2006-09-13 16:31:19 · answer #9 · answered by Anonymous · 1⤊ 1⤋
25= 6x+4-12x
25=-6x+4
-6x=21
x= - 7/2
2006-09-13 16:34:15 · answer #10 · answered by free aung san su kyi forthwith 2 · 1⤊ 0⤋