find the value of the unknown in each equation
1. n - 4 = 6
2. 3x + 2 = 28
3. 2x + 7 +26
4. 1/3a - 3 = 6
5. 3/4a - 3 = 1/2a
6. 3(2a + 3) = 4a + 3
7. 2(c - 4) = 3(c-2)
8. n/2 + n/3 = 30