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Algebra question PLEASE HELP!!!!?
Okay so I don't really get this algebra we're doing, and we have this one question for homework and i've tried it a billion times but i can't get it right. Please help!!!
Find the value of x...
Question:
2x + 8 = 14 - x
And you also have to do a check of it to make sure it's right.
Please help me !!!
thank you sooo much ! :)
12 Answers
- 1 decade agoFavorite Answer
2x + 8 = 14 - x
Take 8 away from both sides.
2x = 6 - x
Add an x to both sides.
3x = 6
Divide by 3.
x = 2
Source(s): 2(2) + 8 = 14 - (2) 4 + 8 = 12 12 = 12 - 1 decade ago
You want to isolate the x, and you need to start by getting all the x's on the same side and all the constants(numbers) on the other.
If you add x to both sides you get:
3x + 8 = 14
If you then subtract 8 from both sides:
3x = 6
Then divide both sides by 3 to get the x by itself:
x = 2
For your check, substitute your answer, which is 2, in for x in the original problem:
2(2) + 8 = 14 - (2)
4 + 8 = 12
12 = 12
So it checks.
- 1 decade ago
2x + 8 = 14 - x
you need all the x's on one side on the equal sign and all the number on the other. everything you do you have to copy on both sides so:
2x + x +8 - 8 = 14 - 8 - x + x
simplify it:
3x=6
divide both sides by 3 and x=2
EDIT
go ami! me 2
Source(s): math is my favorite subject - 1 decade ago
Well, you have to balance out each side, that's the first step, so we'll do that by taking 8 off each side making it
2x = 6 - x
Then we'll add x to each side
3x = 6
Then divide 6 by 3 and you have 2!
So the answer is
4+ 8 = 14 - 2
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- 1 decade ago
x=2
First, subtract the 8 from both sides. The equation looks like this now:
2x=6-x
Then add the x to both sides (cancelling out the x on the side with the 6 on it),. The equation now looks like this:
3x=6
Divide the three away from the x (since you are looking for the answer to what x could be) and since math stays = on both sides, divide the 3 into 6.
x=3
Hope that helped
- Anonymous1 decade ago
2x+8=14-x
Plus x
3x+8=14
Minus 8
3x=6
Divide by 3
x=2
2(2)+8=14-2
2*2=4
4+8=14-2
4+8=12
12=14-2
12=12
Source(s): my brain - 1 decade ago
2x + 8 = 14
minus the 8 from 2x + 8 and 14, so then you would have
2x = 6
so multiply by the reciprical which is 1/2... its confusing, but the opposite of 2 is one half. so then it would be
x = 3
get it? i hope you do... its kind of hard to explain.
- 1 decade ago
X=3
1) you Subtract 8 from both sides
2) you add x to both sides
3) You divide by 3 on each side.
X=3
Source(s): I take Algebra One right now =D 8TH GRADE HONORS REGENTS CLASS OF 09'!
