Answer:
x = 2
Explanation:
1. distribute
10x - 3(x - 6) = x + 30
10x - 3x + 18 = x + 30
2. simplify
7x + 18 = x + 30
3. move 18 to the right side
7x + 18 - 18 = x + 30 - 18
7x = x + 12
4. move x to the left side
7x - x = x + 12 - x
6x = 12
5. divide
x = 2