1/3x + 2 = 4/3x - 5
2 + 5 = 4/3x - 1/3x
7 = x
y = 1/3(7) + 2
y = 7/3 + 2
y = 7/3 + 6/3
y = 13/3
solution is : (7,13/3) <=
slope = (y2 - y1)/(x2 - x1)
4/3 = (-3 - r)/(2 - 5)
4/3 = (-3 - r)/(-3)
-4 = -3 - r
-1 = -r
r = 1
First. we use the Pythagorean theorem:

Add the numbers in

start simplifying


So, the leg has a length of 40 mm.
12 x 2 = 24 (Julio), 24 x 4 = 96 (David).