Answer :
The result of the subtraction is 110.
When we round a number to the nearest ten, we are looking for the multiple of 10 that is closest to that number. In this case, 139 is closer to 140 than it is to 130, so we round it up to 140. Similarly, 29 is closer to 30 than it is to 20, so we round it up to 30.
Once we have rounded the numbers to the nearest ten, we can perform the subtraction operation. Subtracting 30 from 140 gives us:
140 - 30 = 110
So, the result of the subtraction after rounding the numbers to the nearest ten is 110.
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