Question

jorge simplifies: 2.1 + (-5.5) + (-2.2). josephus simplifies 6.7 -(9.1). what is the difference between their answers

Answer 1

1) Gathering the data

Jorge: 2.1 + (-5.5) + (-2.2) ⇒ 2.1 -5.5 -2.2 ⇒ 2.1 - 7.7 ⇒ -5.6

josephus : 6.7 -(9.1) ⇒ -2.4

2) So the difference between their answers, assuming difference as subtraction

-5.6 -(-2.4)

-5.6 +2.4

- 3.2