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2*x+10 = 57/5 // - 57/5
2*x-(57/5)+10 = 0
2*x-57/5+10 = 0
2*x-7/5 = 0 // + 7/5
2*x = 7/5 // : 2
x = 7/5/2
x = 7/10
x = 7/10
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