Thread: [SOLVED] solving system

1. [SOLVED] solving system

which one should i use for doing a substitution method?

6y=x+18
or
2y-x=6

2. Originally Posted by Scoobylover
which one should i use for doing a substitution method?

6y=x=18
or
2y-x=6
You have,

6y-x=18
Thus, x=6y-18

Substitute that into equation (2),
2y-(6y-18)=6
2y-6y+18=6
-4y=-12
y=3
Now you can find "x"