The two longest rivers in the world are the Nile and the Amazon. Together, they are 8145 miles, with the Amazon being 145 miles shorter than the Nile. Find the length of each river.

Answer 1

Let x = the Amazon

x + x + 145 = 8145

2x = 8,000

x = 4,000

Answer 2

la=ln-145
la+ln=8145

ln-145+ln=8145
2*ln=8290
ln=...