1)log1/4(2x–7)=–1
2)6^х+6x+1=42
3)4x=64
4)4x=5
5)log2(x2–x–12)=3
6)lgx+lg x–6=0

Log1/4(2x-7)=-1 log1/4(2x-7)=-1, x>7/22x-7=(1/4)^-12x-7=0,25^-12x-7=(1/4)^12x-7=42x=4+72x=11х=11/2 ; х >7/23)4х=64х=64÷4х=16