Equations

[Rem]

Hi,

I have multiline equations but the equations are not properly aligned. By
which I mean, for example, the "=" signs are not in the same 'column'.
Example:
x(t)=a*g(t)
=a*h(t)*t
is what I get at the output.

It would be neat to have
x(t)=a*g(t)
     =a*h(t)*t

thanks,
Remzi
ps: I am doing it somehow by adding extra space manually, but is there a
neat solution to this problem?