Thread: Simultaneous equations

Qs= -8+2p
Qd= -35 -4p

I have to find out hat "p" is. SO normally i would times the top one by 2 to cancel out the bottom one but its - . can i times the top by - 2 but then how can find what p is. Is there a another way to find P.

I would really appreciate your help.

Originally Posted by abc

Qs= -8+2p
Qd= -35 -4p

I have to find out hat "p" is. SO normally i would times the top one by 2 to cancel out the bottom one but its - . can i times the top by - 2 but then how can find what p is. Is there a another way to find P.

I would really appreciate your help.

If you let , then this is just a system of linear equations:




They equal each other, so:




Now, if d and s are just coefficients, then you solve it just like you said:



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Now, plug q back into one of your equations. Has this helped you?