/sci/ - Science & Math

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Algebra w/ negatives Thomas !TWH5NyhusA Mon Sep 19 07:27:52 2011 No.3763924 [Reply] [Original]

Hello, hischoolfag here.
My friend got back my test and said one of my answers was wrong.
The question was:
>3x + 4 - x - 6
>>Isn't that 2x - 2?

>>	Krakengineer !!5XY+x7grkpt Mon Sep 19 07:32:52 2011 No.3763932 That's correct.

>>	Anonymous Mon Sep 19 07:33:52 2011 No.3763934 3x + 4 - x - 6 isn't a question are you meant to simplify it? or colour it in?

>>	Thomas !TWH5NyhusA Mon Sep 19 07:38:52 2011 No.3763945 >>3763934 Simplify, I guess. To write it as short as possible. Not a native english speaker, sorry.

>>	Thomas !TWH5NyhusA Mon Sep 19 07:39:52 2011 No.3763952 >>3763934 >colour it in What's that?

>>	Anonymous Mon Sep 19 07:43:52 2011 No.3763961 Probably wanted 2(x-1)

>>	Anonymous Mon Sep 19 07:46:52 2011 No.3763966 What are you, in kindergarten?

>>	Thomas !TWH5NyhusA Mon Sep 19 07:47:52 2011 No.3763970 So then it means I prolly didn't pay attention at the test. The test was just to check how well we did, didn't matter toward our grade. 11/12 is pretty good IMO. :)

>>	Thomas !TWH5NyhusA Mon Sep 19 07:52:52 2011 No.3763979 >>3763966 >kindergarten Read the first post, over again. It's a common mistake. You should practice reading more often.

>>	Anonymous Mon Sep 19 08:32:52 2011 No.3764057 >>3763979 Common mistake? The fuck are you talking about? >Hischool Seriously? Reported for underageb&

>>	Thomas !TWH5NyhusA Mon Sep 19 08:45:52 2011 No.3764081 File: 7 KB, 257x187, 1316435149090 (1).jpg [View same] [iqdb] [saucenao] [google] >>3764057 >I can't just change my IP.

>>	Anonymous Mon Sep 19 08:59:35 2011 No.3764114 >>3763924 >11/12 >Basic Algebra exam Enjoy your welfare OP.

>>	Thomas !TWH5NyhusA Mon Sep 19 09:16:11 2011 No.3764159 >>3764114 I thought it said "+" instead of "-" at the test, so I ended up with 4x - 2, instead of 2x - 2. The average was 8,4 in my class. Welfare me here, welfare me there.

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