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# Equations watch

1. Sorry to ask again but I just want to check i'm doing it right.

1/x-5 +6/x =2
x/x(x-5) + 6(x-5)/x(x-5)=2
7x-30/x(x-5)=2
7x-30/x^2-5x=2
7x-30=2(x^2-5x)
7x-30=2x^2-10x
-30=2x^2-13x
2x^2-13x+30=0
Then you can't factorise so what do you do?
2. (Original post by isabel12144)
Sorry to ask again but I just want to check i'm doing it right.

1/x-5 +6/x =2
x/x(x-5) + 6(x-5)/x(x-5)=2
7x-30/x(x-5)=2
7x-30/x^2-5x=2
7x-30=2(x^2-5x)
7x-30=2x^2-10x
-30=2x^2-13x
2x^2-13x+30=0
Then you can't factorise so what do you do?
When you factorise, you work out the value of x. When you factorise that equation, make each bracket equal to 0 and then re-arrange to make x the subject.
3. (Original post by isabel12144)
Sorry to ask again but I just want to check i'm doing it right.

1/x-5 +6/x =2
x/x(x-5) + 6(x-5)/x(x-5)=2
7x-30/x(x-5)=2
7x-30/x^2-5x=2
7x-30=2(x^2-5x)
7x-30=2x^2-10x
-30=2x^2-13x
2x^2-13x+30=0
Then you can't factorise so what do you do?
Hi, I think you made a little mistake on 7th step, I should be 7x-30=2x^2-10x
So you can factorise it.The result(2x-5) (x+6).I hope it is right.
4. (Original post by ravioliyears)
When you factorise, you work out the value of x. When you factorise that equation, make each bracket equal to 0 and then re-arrange to make x the subject.
Ok thank you!
5. (Original post by isabel12144)
Ok thank you!
No problem! Does that make sense?
Hi, I think you made a little mistake on 7th step, I should be 7x-30=2x^2-10x
So you can factorise it.The result(2x-5) (x+6).I hope it is right.
Did you check it honey? am I right?
7. (Original post by ravioliyears)
No problem! Does that make sense?
Yeah, I got it marked and it was right!
Did you check it honey? am I right?
Yeah, it's right! Thanks so much for your help!
9. (Original post by isabel12144)
Yeah, I got it marked and it was right!
Fab! Glad I was able to help
10. I am taking part in the Wings of Hope Achievement Award which helps provide children in India and Malawi with an education. Please donate for this cause at :https://www.justgiving.com/TeamPhoenixwohaa

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Updated: November 9, 2015
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