Dont use the equations from the book. A mixed sample containing 99mTc and 51Cr provides 18,000 counts in the 99mTc window and 8000 counts in the 51Cr window. A sample containing 51Cr alone gives 25,000 counts in the 51Cr window and 15,000 crosstalk counts in the 99mTc window, whereas a sample containing 99mTc alone gives 20,000 counts in the 99mTc window and 1000 crosstalk counts in the 51Cr window. What are the counts due to each radionuclide in their respective photopeak windows? Assume that background counts are negligible.

Please solve in details, and as requested don't use the equation from the book. Don't copy/paste the solution from the book please!!!