Пропорция:
(3у + 8) : 6 = (1 - 4у) : 7
(3у + 8) * 7 = (1 - 4у) * 6
21у + 56 = 6 - 24у
21у + 24у = 6 - 56
45у = - 50
у = - 50 : 45 = - 1 5/45
у = - 1 1/9
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Verified answer
Пропорция:
(3у + 8) : 6 = (1 - 4у) : 7
(3у + 8) * 7 = (1 - 4у) * 6
21у + 56 = 6 - 24у
21у + 24у = 6 - 56
45у = - 50
у = - 50 : 45 = - 1 5/45
у = - 1 1/9