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Which two numbers should be interchanged...

Which two numbers should be interchanged to make the given equation correct ?
`9+7 xx 5 - 18 div 2 = 3 xx 4 -10 + 45 div 5`

A

18 and 45

B

7 and 4

C

2 and 5

D

9 and 3

Text Solution

Verified by Experts

The correct Answer is:
B
`9 + 7 xx 5 - 18 div 2 = 3 xx 4 - 10 + 45 div 5`
`implies 9 + 4 xx 5 - 18 div 2 = 3 xx 7 - 10 + 45 div 5`
`implies 9 + 20 - 9 = 21 - 10 +9`
`implies 20 = 30-10`
`implies 20 = 20`
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