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Lemur [1.5K]
3 years ago
11

An easy way to explain...

Mathematics
2 answers:
Mashcka [7]3 years ago
7 0
it's very simple, 694-72= 622
so in order for you to check you answer you do the opposite
694-72 would equal 622
622+72 would equal 694
lara31 [8.8K]3 years ago
7 0
So first u subtracted 72 and 694 and got 622. then to check ur work, u added ur sum to 72 and got 694
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