405 + 15 * 7 - 175 / 5 * 10 = 160
420 * 4 - 5 * 10 + 100 / [12 * 5 - {10 + 8 * 30 / (2 * 3)}] = 1640 ;
The solutions for the expressions are: (g) 160, (h) 1640, and the last expression results in 57. Each step followed the order of operations accurately. Understanding BODMAS is essential for solving such mathematical problems correctly.
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