I've been trying to learn about other analysis methods, but have also come back to mesh analysis to make sure I have it down. I have recently encounted a problem with 4 sources, 2 dependent, and 2 independent. The problem can be found here (second half of the video;I know it's node voltage analysis but I'm trying to solve it with mesh). Alternatively, I have taken a screenshot for convenience.

I have formulated the following system of equations with meshes ia-if (starting from top left and going right like reading a letter)

ia+1(ia-id)+i(ia-ib)=0

1(ib-ie)+1(ib-ia)-6)=0

6+2(ie-if)+1(ic-if)=0

-12+1(id-ia)+2ia=0

2ia+1(ie-ib)+1(ie-if)=0

1(if-ie)+1(if-ic)+if=0

I have used:

I_x=ie-if

V_x=1*ia

My solutions are: ia=24/7,ib=12/7,ic=-390/7,id=60/7,ie=-6,if=-144/7 (solved with mathematica)

These don't agree with those found in the video.

May someone please check over my answers or tell me what I did incorrectly? I have used kiloOhms as units, but any place value changing still seems to have differing answers.

Thank you very much!