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Option 1 : × and +
Given equation : 7 × 12 + 5 – 9 ÷ 3 = 64
After interchanging ‘ × and + ’ we get :
L.H.S. of equation :
→ 7 + 12 × 5 – 9 ÷ 3
→ 7 + 60 – 3
→ 64 = R.H.S.
Hence, the correct answer is ‘ × and + ’.
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