2550 – [510 – {270 – (90 – 80 + 70)}]
2270
2370
2230
2330
Explanation:
2550 – [510 – {270 – (90 – 80 + 70)}]
= 2550 – [510 – {270 – (10 + 70)}]
= 2550 – [510 – {270 – 80}]
= 2550 – [510 – 190]
= 2550 – 320
= 2230
2550 – [510 – {270 – (90 – 80 + 70)}]
2550 – [510 – {270 – (90 – 80 + 70)}]
= 2550 – [510 – {270 – (10 + 70)}]
= 2550 – [510 – {270 – 80}]
= 2550 – [510 – 190]
= 2550 – 320
= 2230