Question

At sunset, the temperature was -6.4. The temperature then rose 16.9 by noon and then decreased by 12.7 by midnight. What was the temperature at midnight?

Answer 1

-2.2º

1) Given that at sunset it was -6.4, then ir rose 16.9 by noon

2) Then it decreased by 12.7, so

10.5 -12.7 =-2.2 The sign of the greatest number in absolute value prevails

3) Hence, at midnight the Temperature was -2.2