1. A simple, basic, or fundamental method or approach to doing something
He explained the concept in an elementary way so that children could understand.
Ele explicou o conceito de uma maneira elementar para que as crianças pudessem entender.
2. A straightforward or uncomplicated manner of solving a problem
The most elementary way to solve this equation is to use basic algebra.
A maneira mais elementar de resolver esta equação é usar álgebra básica.