Mathematics
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OpenStudy (anonymous):
What is the simplified form of -3x-6x+x?
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OpenStudy (krabsen):
-8x
OpenStudy (lgbasallote):
what is -3 - 6 + 1?
OpenStudy (krabsen):
-3-6=-9
-9+1=-8
OpenStudy (anonymous):
Ohh i get. I'm not good with simplifying equations,lol
OpenStudy (anonymous):
Would you guys mind helping me on a couple more?
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OpenStudy (krabsen):
that is ok but im not going to make all of them for you :)
OpenStudy (krabsen):
you make them, and i will tell what you do wrong, if you do anything wrong
OpenStudy (anonymous):
Ok, sounds good to me.
OpenStudy (anonymous):
Ok what about 2x+3y-4x
Is it 6x+3y?
OpenStudy (krabsen):
no the last 4x are negativ
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OpenStudy (krabsen):
so that is 2x-4x
OpenStudy (anonymous):
Would it be 2x?
OpenStudy (anonymous):
-2x?
OpenStudy (krabsen):
yes -2x
OpenStudy (krabsen):
so the anwser is -2x+3y
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OpenStudy (anonymous):
What about (2x+3y-5)+(-3y-6
OpenStudy (anonymous):
I knew it thank you.
OpenStudy (krabsen):
first you need to remove ( ), im danish so not all i can spell in english
OpenStudy (anonymous):
But they are two seperate equations, wouldn;t you have to distribute?
OpenStudy (krabsen):
there are not two equations here
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OpenStudy (krabsen):
you just need to left the ( ), and then add x's and y's
OpenStudy (anonymous):
So would it be 2x-1y-1?
OpenStudy (krabsen):
you got 3y and -3y that is not 1y
OpenStudy (anonymous):
I'm confused.
OpenStudy (krabsen):
(2x+3y-5)+(-3y-6)
2x+3y-5-3y-6
2x-11
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OpenStudy (krabsen):
2x=2x
3y-3y=0
-5-6=-11
OpenStudy (anonymous):
Ohhhh, ok. =)
OpenStudy (anonymous):
4x+3y)-(2x-5y)?
OpenStudy (krabsen):
it is the same, but this time the 2ed ( ) is negativ
OpenStudy (anonymous):
I got 2x+8y
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OpenStudy (krabsen):
yes
OpenStudy (anonymous):
What about 3xy+4xy-6xz
OpenStudy (krabsen):
here you add xy's
OpenStudy (anonymous):
The answer is 7xy-6xz
OpenStudy (krabsen):
yes
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OpenStudy (anonymous):
What about 7xy+2xz+4xz-12xyz+2zxt
OpenStudy (anonymous):
**7xy+2xz+4xz-12xyz+2zx
OpenStudy (krabsen):
here you find all the ones with the same letters after the number and add them
OpenStudy (anonymous):
Is the answer 7xy+8xz-12xyz?
OpenStudy (krabsen):
yes
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OpenStudy (anonymous):
What about -3(2x-5)-4(x+7)
OpenStudy (krabsen):
here you need to mulitply to lift ( )
OpenStudy (anonymous):
would it be -10x-13?
OpenStudy (krabsen):
yes
OpenStudy (anonymous):
Thank you, that is all the problems I have, you were a great help, I hope you can continue hlepingme and others the same =)
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OpenStudy (krabsen):
np happy to help :)
OpenStudy (anonymous):
=)