Question

what is 1+2 and 2+1 i need answer for 9-9

Answer 1

Answer:

1+2=3

2+1i=1

9-9=0

hope the answer helps

Answer 2

Answer:1+2=3,2+1=3

Explanation:even if you change the place value of a number the answer will be same if you change the data of the number answer will be different ......

9-9=0

because minus plus = minus.....