first let's distribute out the equations to get:
Alright, now let's solve for x (or y, it's your choice) for the first problem:
now take the second equation:
and also solve for x:
and now we can start solving stuff. First things first, you have to write down that:
So now we substitute:
so now multiply both sides by -11 and 5 to get:
now use the distributive property:
now move things around:
Now you can solve for x.
On a side note, is not a nice number, you should double check my work and see if my arithmetic is right.