How do you solve 7x+2x=8x-3?

Mathematics
Tutor: None Selected Time limit: 1 Day

Hi! Can anyone please assist me step by step ? Thanks

Oct 9th, 2015

Thank you for the opportunity to help you with your question!

7x+2x=8x-3

9x=8x-3

9x-8x=-3

x=-3

Please let me know if you need any clarification. I'm always happy to answer your questions.
Oct 9th, 2015

Hi! thanks for answering my question but how do you get -3 for the answer?

Oct 9th, 2015

Doesnt 9-5 equal 4?

Oct 9th, 2015

We have 9x-8x at one side and -3 at the other side. 9x-8x=x


Oct 9th, 2015

Oh so what ever is left over is the answer?

Oct 9th, 2015

the answer is x=-3

Oct 9th, 2015

oh, ok thanks! I need help with another question. 3n+2n=7+4n

Oct 12th, 2015

5n = 7+4n

5n-4n=7

n=7

Oct 12th, 2015

5n-4n doesnt equal 7 ? How did you get 7? Can you explain this to me?

Oct 12th, 2015

5n-4n=7

n(5-4)=7

1n=7

n=7

Oct 12th, 2015

Thanks for explaining it. I have another question how do you solve 5/6x+1/6x=-9 ?

Oct 12th, 2015

Please post your questions and accept my bid.

Oct 12th, 2015

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