Answer:

Step-by-step explanation:

Answer:
70
Step-by-step explanation:
Porque si haces 31-18=13
57-44=13 entonces están subiendo en 1e y luego haces 57+13=70
Answer:
Two subsets that form set of real numbers
You can take positive numbers and negative numbers subset
One subset become (- infinity,0]
other subset (0, infinity)
Answer:
25
Step-by-step explanation:
8*5=40
40+6=46
46-10=36
36-9=25