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(-3/10)*x-(5/12) = 0
(-3/10)*x-5/12 = 0
-3/10*x-5/12 = 0 // + 5/12
-3/10*x = 5/12 // : -3/10
x = 5/12/(-3/10)
x = -25/18
x = -25/18
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