Which two numbers (not digits) should be interchanged to make the given equation correct?
27 × 3 –7² +  19 + (69 ÷ 23) × 6 – 15 = 70

Correct option is D

27 × 3 –7²+ 19 + (69 ÷ 23) × 6 – 15 = 70
Interchange 7 and 6
27 × 3 –6²+ 19 + (69 ÷ 23) × 7 – 15 = 70
81 - 36 + 19 + 3 × 7 – 15 = 70
(81 + 19 + 21) - ( 36 + 15) = 70
121 - 51 = 70
70 = 70