Answer:
1/2
Step-by-step explanation:
=[-1/4 + 1/6] ÷ [1/3 - 1/2]
=[-3/12 + 2/12] ÷ [2/6 - 3/6]
=[-1/12] ÷ [-1/6]
=[-1/12] x [-6/1]
= 1/2
