x=3 y=1
make the two equation equal each other
3x+8y=17 -2x+9y=3
3x=-8y+17 -2x=-9y+3
x=(-8y+17)/3 x= (-9y+3)/-2
(-8y+17)/3 =x= (-9y+3)/-2
cross multiply and solve y=1
3x-8y=17 -2x+9y=3
-8y=-3x+17 9y=2x+3
y=(-3x+17)/-8 y=(2x+3)/9
(-3x+17)/-8=y=(2x+3)/9
x=3