Question

simplify 1/2÷(-1/3÷2/5)≠(1/2÷-1/3)÷2/5​

Answer 1

1/2÷(-1/3÷2/5)≠(1/2÷-1/3)÷2/5

1/2÷(1/3×5/2)≠(1/2×3)×5/2

1/2×5/6≠3/2×5×2

5/12≠15/4

5×4≠15×12

20≠180

180/20≠1

9≠1