singular or plural? igual, iguales

[ojyram]

Should igual be plural or singular in this sentence?

Equivalent fractions are equal to each other.
Las fracciones equivalentes son iguales unas a otras.

 

[piloya]

plural.

Saludos

 

[jmx]

Should igual be plural or singular in this sentence?

Equivalent fractions are equal to each other.
Las fracciones equivalentes son iguales unas a otras.

Your translation is OK. In this case a singular (igual) would sound bad. But I wouldn't rule out that some native speakers say it in singular.

 

[Outsider]

The fractions are equal. Plural.