Y = 6x
4x + y = 150
4x + 6x = 150
10x = 150
X = 15
Y = 6 * 15
Y = 90
Ответ ( 15 ; 90 )
Формулы: loga b/loga c= logc b ----> log2 6 / log2 9=log9 6
loga b=1/logb a ----->log9 6 = 1/log6 9
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log2 6 * log6 9 / log2 9 = (log2 6 / log2 9)*log6 9=
=log9 6 * log6 9=log6 9 / log6 9 =1
ответ 1