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Solutions

Given statement : 459 + 17 × 12 ÷ 72 - 47 = 349
According to the question, after interchanging the signs :
So,
459 + 17 × 12 ÷ 72 - 47 = 349 ⇒ 459 ÷ 17 × 12 + 72 - 47 = 349
27 × 12 + 72 - 47 = 349
324 + 72 - 47 = 349
396 - 47 = 349
349 = 349 (LHS = RHS)
459 + 17 × 12 ÷ 72 - 47 = 349 ⇒ 459 + 17 × 12 - 72 ÷ 47 = 349
459 + 17 × 12 - 1.53 = 349
459 + 204 - 1.53 = 349
663 - 1.53 = 349
661.47 ≠ 349 (LHS ≠ RHS)
459 + 17 × 12 ÷ 72 - 47 = 349 ⇒ 459 × 17 + 12 ÷ 72 - 47 = 349
459 × 17 + 0.17 - 47 = 349
7803 + 0.17 - 47 = 349
7803.17 - 47 = 349
7756.17 ≠ 349 (LHS ≠ RHS)
459 + 17 × 12 ÷ 72 - 47 = 349 ⇒ 459 - 17 × 12 ÷ 72 + 47 = 349
459 - 17 × 0.17 + 47 = 349
459 + 47 - 2.89 = 349
506 - 2.89 = 349
503.11 ≠ 349 (LHS ≠ RHS)
Hence, "Option - (1)" is the correct answer.