O negativo da idade de Arnaldo é menor que o negativo da idade de José. O negativo da idade de José é menor que a idade de Francisco. Pode-se afirmar, seguramente, que:

A > J

Step-by-step explanation:

A: Arnaldo's age

J: Jose's age

F: Francisco's age

First statement: -A < -J

if we multiply the inequality, changes the sign of the numers and the direction of the inequality:

(-1)*(-A) > (-1)*(-J) ---> A > J

Second statement: -J < F

Since F has to be ever a positive number, this inequality always satisfies, no mathers what is the value of J.

The, the only one what we can afirm: A > J --> " Arnaldo is older then José"

sorry, i can't understand your question. will later if you describe more clearly!

: )

answer:

it is 28 degrees colder in detroit than philadelphia.

step-by-step explanation:

what number adds to 21  

-7 + ? = 21

-7 + 28 = 21

hope it