# Subscript more than one character? a_(2)=3a_{2-1}

GROUPS:
 How do you get wolfram to read the 2-1 completely subscripted, or as a "base" a(2)=3a{2-1} It only sends the 2 to the base of a at the end of the equation!!!! never the -1 ugh..... plz help
 Is this a typing problem, or an evaluation problem? Look up how to make Subscript in the documentation, for example with the menu Insert > Typesetting > Subscript Subscript[a, 2] == Subscript[a, 2 - 1]