Ответ: 57
1/4y + 4 = 23 - 1/12y
1/4y + 1/12y = -4 + 23
3/12y + 1/12y = 19
4/12y = 19
y = 19 : 1/3 = 19 * 3
y = 57
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Ответ: 57
1/4y + 4 = 23 - 1/12y
1/4y + 1/12y = -4 + 23
3/12y + 1/12y = 19
4/12y = 19
y = 19 : 1/3 = 19 * 3
y = 57