Question 533196
2x + y = 17
y = 6x + 1


y= 2x+1

substitute y in the first equation

2x+(6x+1)=17
8x+1=17
-1 on both sides

8x+1-1=17-1
8x=16
/2
x=2
Plug x=2 in y=2x+1

y=6*2+1 
y=13