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2*x-5 = -18/5 // + -18/5
2*x-(-18/5)-5 = 0
2*x+18/5-5 = 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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