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Simplify : 3{:[(-2,3),(1,5),(-4,3)]:}-2{...

Simplify : `3{:[(-2,3),(1,5),(-4,3)]:}-2{:[(3,-1),(2,1),(-4,6)]:}`

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`3{:[(-2,3),(1,5),(-4,3)]:}-2{:[(3,-1),(2,1),(-4,6)]:}={:[(-6,9),(3,15),(-12,9)]:}-{:[(6,-2),(4,2),(-8,12)]:}={:[(-12,11),(-1,13),(-4,-3)]:}`
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