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-((3/5)*x) = 6/35 // - 6/35
-((3/5)*x)-(6/35) = 0
(-3/5)*x-6/35 = 0
-3/5*x-6/35 = 0 // + 6/35
-3/5*x = 6/35 // : -3/5
x = 6/35/(-3/5)
x = -2/7
x = -2/7
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