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(1/7)*(2*x-3) = 0
1/7*(2*x-3) = 0
( 1/7 )
1/7 = 0
x belongs to the empty set
( 2*x-3 )
2*x-3 = 0 // + 3
2*x = 3 // : 2
x = 3/2
x = 3/2
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