Operações com Frações – Soma

Synopsis: It is explained how to perform the sum of fractions with the same denominator, and cited examples. Then, it is introduced the notion of geometric equivalent fractions way, and then it is explained how we added different fractions with denominators generally inspired idea of ​​equivalent fractions and samples are run.
Source: Portal of Mathematics.
URL: http://matematica.obmep.org.br/index.php/modulo/ver?modulo=28