lg54=lg2+lg3³
=lg2+3lg3
=a+3b
lg2.4=lg24-lg10
=lg2³+lg3-1
=3lg2+lg3-1
=3a+b-1
lg45=lg9-lg2+lg10
=lg3²-lg2+1
=2lg3-lg2+1
=2b-a+1
lg54=lg2+lg3³
=lg2+3lg3
=a+3b
lg2.4=lg24-lg10
=lg2³+lg3-1
=3lg2+lg3-1
=3a+b-1
lg45=lg9-lg2+lg10
=lg3²-lg2+1
=2lg3-lg2+1
=2b-a+1