Logarithms, or Log, represented as \(Log_{x}(y)=z\), is same as \(x^z=y\). But In \(x^z=y\), you are trying to get the value of y, but in \(Log_{x}(y)=z\), you are trying to get the value of z, not y. Sometimes you will not see x in place. That means it's value is set to 10. So \(Log_{x}(y)=z\) means something like "if you have put an exponent z to x and got y, what is that exponent z's value?".
Just remember this. That's all you have to do.