How to solve this system?

[Han]

(07-06-2017 06:46 PM)COB160 Wrote:  Good! How can I do this? Thank u for response

No calculator or software of any kind is going to be able to magically determine what parameters are variables (to be solved for) and what parameters are constants. And no one can help you until you at least tell us what it is you want to solve for (r? m1? m2? p1? or p2? ... which?)