3/4-7/9
8/12-3/9
4/5÷3/4
7/9÷2/7
mv9699256:
:)
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2
3/4 - 7/9
= 27/36 - 28/36
= 27 - 28/36
= -1/36
8/12 - 3/9
= 2/3 - 1/3
= 2 - 1/3
= 1/3
4/5 ÷ 3/4
= 4 × 4/5 × 3
= 16/15
7/9 ÷ 2/7
= 7 × 7/9 × 2
= 49/18
Suerte,salu2!
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