Х - 3/8 = 1/4
х = 1/4 + 3/8 = 2/8 + 3/8
х= 5/8
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5/8 - 3/8 = 1/4
2/8 = 1/4
1/4 = 1/4
у + 4/11 = 3/5
у= 3/5 - 4/11 = 33/55 - 20/55
у= 13/55
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13/55 + 4/11 = 3/5
13/55 + 20/55 = 3/5
33/55 = 3/5
(33:11)/(55:11) = 3/5
3/5 = 3/5
4/15 +у =11/25
у= 11/25 - 4/15 = 33/75 - 20/75
у= 13/75
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4/15 + 13/75 = 11/25
20/75 + 13/75 = 11/25
(33:3)/(75:3) = 11/25
11/25 = 11/25