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3*x-10 = (2*x)/30 // - (2*x)/30
3*x-((2*x)/30)-10 = 0
3*x+(-1/15)*x-10 = 0
44/15*x-10 = 0 // + 10
44/15*x = 10 // : 44/15
x = 10/44/15
x = 75/22
x = 75/22
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