{6x-7y=40
{5y-2x=-8
5y-2x=-8
-2x=-8-5y|÷(-2)
x=4+5/2y
{x=4+5/2y
6(4+5/2y)-7y=40
24+15y-7y=40
24+8y=40
8y=16
y=2
x=4+5/2*2
x=9
Otvet : ( 9 ; 2 ) .
