<span>The months that have thirty one days are January March May, July, October, and December.</span>
Answer: Preterite (salí)
Explanation: It is Preterite because it references an action that was completed once in a specific time period.
Since "leer" means "to read" you would want to say "Yo leo el libra en 30 minutos."
Número: 100z+10y+x
Número con cifras invertidas:
100x+10y+z
Resta:

Suma:

Número:

Complemento aritmético: