\eqalignno - Tex Command

NAME

\eqalignno - Used for equation alignment with optionally numbered (tagged) lines.

SYNOPSIS

{ \eqalignno{ <math> & <math> & <equation tag> \cr <repeat as needed> } }

DESCRIPTION

\eqalignno command is used for equation alignment; for aligning multi-line displays at a single place. The ampersand is placed where alignment is desired; a double-backslash can be used in place of the \cr ; the final \\ or \cr is optional; supports only a single \tag, which is vertically centered. if there is no tag, then the final & <equation tag> is omitted;

EXAMPLE

1. \eqalignno{
   3x - 4y &= 5   &(\dagger) \cr
   x  +  7 &= -2y &(\ddagger)\cr
         z &= 2
   }
   

   $ \eqalignno{ 3x - 4y &= 5 &(\dagger) \cr x + 7 &= -2y &(\ddagger)\cr z &= 2 } $