Jillian is using integer tiles to add 7 + (-2). she uses the steps below. jillian has made an error . in which steps does it occur?

Jillian has made an error in steps 4.

Step-by-step explanation:

Given : Jillian is using integer tiles to add 7 + (-2).

To find : Jillian has made an error . In which steps does it occur.

Solution : We have given   integer tiles to add 7 + (-2).

Step 1 :  Jillian take the + 7  tiles , that is correct

Step 2 : Now , Jillian take another - 2 tile , that is also correct.

Step 3 : In this + 2 tiles  cancel the  -2 tile from +7 tiles.

Step 4 : Now he get 2 that is wrong because from the step 3 we get + 5 tile after canceling  + 2 tiles from + 7.

Therefore,  Jillian has made an error in steps 4.

add an !

step-by-step explanation: