Log12(1/2*1/72)=log12(1/144)=log12(12^-2)
X-y=1
x+2y=3
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x=y+1
y+1+2y=3
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x=y+1
3y=2
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x=y+1
y=2/3
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x=1 целая 2/3
y=2/3
Log6 26=Log6 2+Log6 2+Log6 2+Log6 3=x+x+x+y=3x+y;
Можно и так:Log6 2^3•Log6 3=3Log6 2•Log6 3=3x+y;