Given veca+vecb=2hati," if "vecb=3hatj-h...

Given `veca+vecb=2hati," if "vecb=3hatj-hatk` then find out vector `veca` :-

`2hati+3hatj+hatk`

`2hati-3hatj+hatk`

`hatj+hatk`

`2hati-hatj-hatk`

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