Question

observe the following 1+2-3+4+5-6-7+8-9=-5
change one -sing is +sing to get the sum 9​

Answer 1

Answer:

Check with the + sign to all the negative numbers in an order as it is given.So that it is more clear.It will be easy for u to for u to practice.

Step-by-step explanation:

Given

1+2-3+4+5-6-7+8-9

1+2+4+5+8-3-7-9

1+2+4+5+8+7-9-3-6

20+7-9-3-6

27-18

=9

Hence proved //