10-3x=3x-2 we have to get like terms together, there are 2 ways to do this problem, i will do it both ways.
first way: 10-3x=3x-2 add 3x to both sides
10=6x -2 now add 2 to both sides
12 = 6x finally divide both sides by 6
2 = x
second way: 10-3x=3x-2 subtract 3x from both sides
10 - 6x = -2 now subtract 10 from both sides
-6x = -12 finally finally divide both sides by -6
x = 2
both methods are valid and give you the same answer, people usually do what is quicker for them i think the first method is faster but someone like you could find second way easier it differs from person to person