7 - 4(2х - 2) = 4 + (3х - 1)
7 - 8х + 8 = 4 + 3х - 1
7 + 8 + 1 - 4 = 3х + 8х
11х = 12
х = 12/11
х = 1 целая 1/11
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Проверка: 7 - 4(2 · 12/11 - 2) = 4 + (3 · 12/11 - 1)
7 - 4(2 2/11 - 2) = 4 + (3 3/11 - 1)
7 - 4 · 2/11 = 4 + 2 3/11
7 - 8/11 = 6 3/11
6 3/11 = 6 3/11 - верно
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Verified answer
7 - 4(2х - 2) = 4 + (3х - 1)
7 - 8х + 8 = 4 + 3х - 1
7 + 8 + 1 - 4 = 3х + 8х
11х = 12
х = 12/11
х = 1 целая 1/11
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Проверка: 7 - 4(2 · 12/11 - 2) = 4 + (3 · 12/11 - 1)
7 - 4(2 2/11 - 2) = 4 + (3 3/11 - 1)
7 - 4 · 2/11 = 4 + 2 3/11
7 - 8/11 = 6 3/11
6 3/11 = 6 3/11 - верно