(5 x+2)+(9x-14)

Solve for x:
14 x-12 = 0

Factor constant terms from the left hand side:
2 (7 x-6) = 0

Divide both sides by 2:
7 x-6 = 0

Add 6 to both sides:
7 x = 6

Divide both sides by 7:
Answer: | 
| x = 6/7