<HTML lang="es-ES"> <HEAD> <TITLE>Practica 4</TITLE> </HEAD> <style> h2{color:brown; text-align: center; font font-family:"algerian"} p{color:violet; text-align: center; } </style> <meta charset="UTF-8"> <BODY BGCOLOR="golden"> <H2>CALCULLADORA PHP</H2> <FORM ACTION="SUMA3.PHP" METHOD="POST"> <TABLE BORDER="4"> <TR> <TD> <P>1° NUMERO</P> <CENTER><INPUT TYPE="TEXT" NAME="NUMERO1"> <BR> </BR> </TD> </TR> <TR> <TD> <P>2° NUMERO</P> <CENTER><INPUT TYPE="TEXT" NAME="NUMERO2"></CENTER> <BR> </BR> </TD> </TR> <TR> <TD> <CENTER><INPUT TYPE="SUBMIT" VALUE="SUMAR"></CENTER> <B...