no es tan fácil como

isn't as easy as, it's not as easy as

→ no
phrase Rare #31,524
isn't as easy as Used to compare difficulty or simplicity with another thing or situation.
SP: Aprender español no es tan fácil como parece.
EN: Learning Spanish isn't as easy as it seems.

Cocinar no es tan fácil como hacer un pastel.

Cooking is not as easy as baking a cake.

— Laurence Anyways (2012)

El trabajo de un conductor no es tan fácil como parece.

The job of a driver is not as easy as it seems.

Esto no es tan fácil como parece.

This is not as easy as it seems.

— El club de la lucha (1999)

No es tan fácil como parece.

It's not as easy as it seems.

— El viento que agita la cebada (2006)

Este libro no es tan fácil como ese.

This book is not as easy as that one.

Esta novela inglesa no es tan fácil como para que la leas en una semana.

This English novel isn't easy enough to read in a week.

No es tan fácil como lo pensé.

It's not as easy as I thought.

Este libro no es tan fácil como aquel.

This book is not as easy as that one.

Construir un parque no es tan fácil como usted pretende en este proyecto.

Building a park is not as easy as you intend in this project.

— Vivir (1952)

phrase Rare #34,564
it's not as easy as Used to compare the actual difficulty of something with how easy it may seem or how easy someone believes it is. The phrase is followed by a verb or description, such as “crees” (you think) or “parece” (it seems).
SP: Aprender un idioma no es tan fácil como parece.
EN: Learning a language isn't as easy as it seems.

Sé que no es tan fácil como parece.

I know it’s not as easy as it seems.

No es tan fácil como la gente piensa.

It’s not as easy as people think.

No es tan fácil como creéis.

It’s not as easy as you think.

No es tan fácil como usted lo pinta.

It’s not as easy as you make it seem.

— Black (2005)

Esto no es tan fácil como se ve.

This isn’t as easy as it looks.

No es tan fácil como crees.

It's not as easy as you think.

No es tan fácil como piensas.

It’s not as easy as you think.