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42*((1/14)*x-(5/42)) = 0
42*((1/14)*x-5/42) = 0
42*(1/14*x-5/42) = 0
1/14*x-5/42 = 0 // + 5/42
1/14*x = 5/42 // : 1/14
x = 5/42/1/14
x = 5/3
x = 5/3
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