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Mathematics, 08.12.2020 14:00 jadenicole908

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Add or subtract
a) 2/5+1/5
b) 2/3+5/7
c) 1/9-2/7

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Add or subtract
a) 2/5+1/5
b) 2/3+5/7
c) 1/9-2/7...

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