Use the method of elimination to solve the following simultaneous equations.

http://www.eso.org/sci/software/esom...vola/img49.gif-5p+q/2=-3/2

2p+3q/2=4

What are the following steps?

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- August 19th 2012, 05:21 PMwilliam24Simultaneous equation problem
Use the method of elimination to solve the following simultaneous equations.

http://www.eso.org/sci/software/esom...vola/img49.gif-5p+q/2=-3/2

2p+3q/2=4

What are the following steps? - August 19th 2012, 05:34 PMpickslidesRe: Simultaneous equation problem
To eliminate p, multiply the first equation by two, the second by 5 and add the results.

- August 19th 2012, 08:25 PMwilliam24Re: Simultaneous equation problem
-5p+q/2=-3/2......(1)

2p+3q/2=4......(2)

(1)x2

(-5p)x2+(q/2)x2=(-3/2)x2

-10p+q=-3

(2)x5

(2p)x5+(3q/2)x5=(4)x5

10p+15q/2=20

(-10p+q)+(10p+15q/2)=-3+20

16q/2=17

↓↓↓ ?? - August 19th 2012, 08:32 PMpickslidesRe: Simultaneous equation problem

Then

- August 19th 2012, 08:40 PMwilliam24Re: Simultaneous equation problem
Thx for ur help.

My answer booklet's answer is q=-2 and p=1

After I follow ur method to do, I also got the q=2 answer.

Is there are somethin' wrong??