Задание 2/9+x=7/9 6/11-x=4/11 x-3/7=2/7 4/15+6/15= 27/28-25/28=

Question

Задание
2/9+x=7/9
6/11-x=4/11
x-3/7=2/7
4/15+6/15=
27/28-25/28=

Answer 1

2/9+х=7/9
х=7/9-2/9
х=5/9

Comments

6/11-х=4/11

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х=6/11-4/11

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х=2/11

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х-3/7=2/7

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х=3/7+2/7

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х=5/7

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4/15+6/15

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=10/15=2/3

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27/28-25/28=2/28+1/14

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2/28=1/14*