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svetoff [14.1K]
3 years ago
8

The sum of 69 and 42 is five more than the difference of 146 and a number. Calculate the value of the unknown number.

Mathematics
1 answer:
Len [333]3 years ago
5 0
As an equation, we have:
69+42=5+(146-x)

You just have to simplify:

111=5+(146-x)
106=146-x
-40=-x
40=x

Your unknown number is 40
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