Question

como fasso essa conta 6x+y=2 5x+2y=11 y=2-6x

Answer 1

5x+2(2-6x)=11
5x+4-12x=11
5x-12x=11-4
-7x=7
X= 7/-7
X= -1

Y=2-6x
Y= 2-6(-1)
Y= 2-6
Y= -4

S= {-1,-4}