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(-10*x)/15 = -4/3 // + -4/3
(-10*x)/15-(-4/3) = 0
(-10*x)/15+4/3 = 0
4/3-2/3*x = 0 // - 4/3
-2/3*x = -4/3 // : -2/3
x = -4/3/(-2/3)
x = 2
x = 2
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