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2-((1*x)/15) = -3 // + 3
2-((1*x)/15)+3 = 0
2-(x/15)+3 = 0
5-1/15*x = 0 // - 5
-1/15*x = -5 // : -1/15
x = -5/(-1/15)
x = 75
x = 75
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