1.

If bara=bari+barj+bark,bara.barb=1,baraxxbarb=2bari+barj-3bark then 3barb=

Answer»

`5bari-4barj+2bark`
`3bari-6barj`
`4bari-5barj+1k`
`4bari+barj+bark`

ANSWER :A


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