Answers

2015-09-10T17:15:20+05:30
Add the numbers and put the positive sign.
Hope it helps and pl mark it as the best answer :-)
0
2015-09-10T18:01:43+05:30
(+) + (+) = +
(+) + (-) = bigger number will subtract the smaller one and bigger number sign will come with the number
(-) + (+) = bigger number will subtract the smaller one and bigger number sign qill come with the number
(-) + (-) = -
1 5 1