Answer:
x = -3
Explanation:
to solve this equation you should first find the LCD or least common denominator for 2 and 6
the LCD is 6
so you should multiply each side by six

3x + 15 - x - 3 = 6
now combine like terms
2x + 12 = 6
now subtract both sides by 12
2x = -6
lastly divide everything by 2
x = -3
that is your answer