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log1\2 3 +log 1\2 16\3 =
log1\2 (3*16\3) =log1\2 16
log1\2 16 =x
1\2^x =16
2^-x =2^4
-x= 4 /÷(-1)
x= -4
log2\3 4 - 2 log 2\3 3=
log2\3 (4÷9) =log2\3 4\9
log2\3 4\9 =x
2\3^x=4\9
2\3^x =(2\3)²
x=2