5y + 3(7y + 18) = 106
5y + 3 · 7y + 3 · 18 = 106
5y + 21y + 54 = 106
5y + 21y = 106 - 54
26y = 52
y = 52 : 26
y = 2
Ответ: y = 2
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5y + 3(7y + 18) = 106
5y + 3 · 7y + 3 · 18 = 106
5y + 21y + 54 = 106
5y + 21y = 106 - 54
26y = 52
y = 52 : 26
y = 2
Ответ: y = 2