";
$num10 += 3;
echo "El valor de 'num10' paso a ser: [".$num10."]";
$num10 *= 10;
echo "El valor de 'num10' paso a ser: [".$num10."]";
$num10 /= 2;
echo "El valor de 'num10' paso a ser: [".$num10."]";
$suma = $num20 + $num30;
$multiplicacion = $num20 * $num30;
$resto = $num20 % $num30;
echo "La suma es: [".$suma."]
";
echo "La multiplicación es: [".$multiplicacion."]
";
echo "El resto es: [".$resto."]";
?>