Question 14859
so you have 7a-3=3-2a so first I would add 2a to both sides so I get

7a-3+2a=3-2a+2a

this boils down to

9a-3=3

add 3 to both sides and get

9a-3+3=3+3

this boils down to

9a=6

divide both sides by 9, and you get 9a/9=6/9 

so a=2/3

hope this helps