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weechero | 21:54 Wed 23rd Jan 2013 | Quizzes & Puzzles
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2x+7=?
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Avatar Image Prudie
Whatever you want it to be, pick a value for X
21:57 Wed 23rd Jan 2013
Avatar Image elliemay1
Obviously depends on the value of x. Could be any answer: 7,9,11....
21:59 Wed 23rd Jan 2013
Avatar Image weechero
Question Author
its 2x+7=13?
21:59 Wed 23rd Jan 2013
Avatar Image elliemay1
Could you explain why, please?
22:01 Wed 23rd Jan 2013
Avatar Image Prudie
Really?
Well what do you add to 7 to make 13?
x will be half of that
22:01 Wed 23rd Jan 2013
Avatar Image weechero
Question Author
so answer is 3?
22:03 Wed 23rd Jan 2013
Avatar Image Prudie
Correct
22:03 Wed 23rd Jan 2013
Avatar Image elliemay1
Did you forget to put 13 in original qn?
22:06 Wed 23rd Jan 2013
Avatar Image weechero
Question Author
thanks , is the answer to 2x-7=13 is it 10?
22:06 Wed 23rd Jan 2013
Avatar Image bert_h
Yes, you've got it, 2 x 10 - 7 = 13 so 10 is the correct value for x.
22:07 Wed 23rd Jan 2013
-- answer removed --
Avatar Image Flyhalf
Nooooooo
2 times 3 plus 7 equals 13, so the answer is 3.
22:09 Wed 23rd Jan 2013
Avatar Image Tuvok
2x + 7 = 13

Thus 13 - 7 = 6

So 2x = 6

Thus 6 divided by 2 = 3

So x = 3
22:10 Wed 23rd Jan 2013
Avatar Image Prudie
Pardon?
Is the question find x if 2x +7= 13 ?
If so you have worked out that 6+7 = 13
So 2x is 6
So x is 3
22:11 Wed 23rd Jan 2013
-- answer removed --
Avatar Image bert_h
Hey there, two different questions, two different answers.

2x + 7 = 13, answer x = 3.
2x - 7 = 13, answer x = 10.

I think the second question was meant to be different, not a typing error.
22:12 Wed 23rd Jan 2013
-- answer removed --
Avatar Image Tuvok
Rereading posts there are 2 equations floating around.

2x PLUS 7 = 13

and

2x MINUS 7 = 13

Both have been answered
22:14 Wed 23rd Jan 2013
Avatar Image elliemay1
One equation has + and the other - so obviously there will be 2 different answers. In original post did you forget to put in 13???
22:14 Wed 23rd Jan 2013
Avatar Image weechero
Question Author
I got them thanks, can u help me with 3(2x+5=27
22:15 Wed 23rd Jan 2013

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