5y = 20÷16
5y = 5÷4
y = 5÷(5+4)
y = 1÷4
y = 0.25
Ответ: 0.25
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5y = 20÷16
5y = 5÷4
y = 5÷(5+4)
y = 1÷4
y = 0.25
Ответ: 0.25