1
Second step you have to follow to solve a combined opperation
2
What process you have to follow to solve this problem? Carmen goes every 28 days, Rafael 25 and Teresa every 22 days. The 12th of september they coincide, whey the coincide again?
3
How are called the numbers that are represented with "-" before?
4
Numbers that are represented with "+" before the number are...
5
The set of whole numbers, positive or negative, and zero.
6
Uses in the daily life
