OK, so your first step would be to write your equation like this
7x+3=3x+35 because they are corresponding angles therefore they equal each other
Subtract 3 from both sides, this leaves you with 7x=3x+32
Next subtract 3x from both sides so you have 4x=32.
Your last step is to divide 4x and 32 by 4, so you will end up with x=8
Hope this helps!!
