Answer:
-4
Explanation:
If there is 1-5 then we should do – from last I mean we should do -5-1 you will not understand like this I will show you by sep wise step
= -5
-1
————
ans -4
If you will not understand Look here when there will be -5-4 then what should we do? There is -5-4 So we should do –
If there is -4+2 then you don't know how to do it. So note this: + × + = +
+ × - = -
- × + = -
I know this much only. If you have more doubt then ask for your Maths teacher.