6x+18+6x+12=5*(x+2)(x+3)
12x+30=30+5x^2+25x
5x^2+13x=0
x1=0
x2=-13/5=-2,6
l=2.6
10х+15у=-45
2х-3у=33
2х-3у=33/(*-5)
+
-10х+15у=-165
___________
30у=-210/(:30)
у=-7
Найдем х:
2х-3*(-7)=33
2х+21=33
2х=33-21
2х=12/(:2)
х=6
Ответ:х=6, у=-7