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(1/3)*(3*x-6) = 0
1/3*(3*x-6) = 0
( 1/3 )
1/3 = 0
x belongs to the empty set
( 3*x-6 )
3*x-6 = 0 // + 6
3*x = 6 // : 3
x = 6/3
x = 2
x = 2
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