x = nr 1
y = nr 2
x = y - 3
[tex] {x}^{2} + {y}^{2} = 225 [/tex]
[tex] \sqrt{ {x}^{2}} + \sqrt{ {y}^{2}} = \sqrt{225} [/tex]
x + y = 15
y - 3 + y = 15
2y = 15 + 3
2y = 18
y = 18 : 2
y = 9
x = 9 - 3
x = 6
