23 – [23 – {23 – (23 – 23 – 23)}]
0
23
–23
46
Explanation:
23 – [23 – {23 – (23 – 23 – 23)}]
= 23 – [23 – {23 – (0 – 23)}]
= 23 – [23 – {23 – (– 23)}]
= 23 – [23 – {23 + 23}]
= 23 – [23 – 23 – 23]
= 23 – [0 – 23]
= 23 – [– 23]
= 23 + 23
= 46