700*(83.400/x) = 420.000
83.400/x = 420.000/700
83.400/x = 600
83.400 = 600x
x = 83.400/600
x = 0.139
Ответ: x = 0.139
700*(83.400/x) = 420.000
83.400/x = 420.000/700
83.400/x = 600
83.400 = 600x
x = 83.400/600
x = 0.139
Ответ: x = 0.139