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(1/7)*(14*x-7)-5 = 0
1/7*(14*x-7)-5 = 0
1/7*(14*x-7)-5 = 0
2*x-6 = 0
2*x-6 = 0
2*x-6 = 0 // + 6
2*x = 6 // : 2
x = 6/2
x = 3
x = 3
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