thanks

Question:

and the teacher wanted us to first know the loops and write down the formulas and then write them in standard form.

i used the square on the left as loop 1, and the one on the right as loop 2. i start from the bottom left point of each loop.

loop 1 =v1-R1(i1)-R2(i1-i2)-V2=0

loop 2 =v2-R2(i2)-R3(i1)-R4=0

in my standard form i separated the volts so i used KVL but my friend told me to separate the current so i had to use KCL

and to that im completely oblivious, how do i do that? and are the formulas for my loops even correct?

thank you.