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.

Let x = the Amazon

x + x + 145 = 8145

2x = 8,000

x = 4,000

la=ln-145

la+ln=8145

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

Let's denote the length of the Nile as N.

Since the Amazon is 145 miles shorter than the Nile, we can represent the length of the Amazon as N - 145.

According to the given information, the total length when you add the Nile and the Amazon is 8145 miles:
N + (N - 145) = 8145

Now, we can solve this equation to find the length of each river.

Combining like terms, we have:
2N - 145 = 8145

To isolate the variable N, we can add 145 to both sides of the equation:
2N - 145 + 145 = 8145 + 145
2N = 8290

Next, we can divide both sides of the equation by 2 to solve for N:
(2N)/2 = 8290/2
N = 4145

Therefore, the length of the Nile (N) is 4145 miles.
And the length of the Amazon (N - 145) is 4145 - 145 = 4000 miles.

So, the Nile is 4145 miles long and the Amazon is 4000 miles long.