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about to only mathematics

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We have ,
` vecc=3veca+4vecb and 2 vecc=veca-3vecb`
`implies 2(3veca+4vecb)=veca-3vecb`
`implies 6veca+8vecb=veca-3vecb`
`implies 5veca=-11vecb`
`implies veca=(-11)/(5)vecb and vecb=(-5)/(11)veca`
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  1. about to only mathematics

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