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2*x-12 = (1/3)*(10*x-16) // - (1/3)*(10*x-16)
2*x-((1/3)*(10*x-16))-12 = 0
(-1/3)*(10*x-16)+2*x-12 = 0
2*x-1/3*(10*x-16)-12 = 0
2*x-1/3*(10*x-16)-12 = 0
16/3-4/3*x-12 = 0
-4/3*x-20/3 = 0
-4/3*x-20/3 = 0
-4/3*x-20/3 = 0 // + 20/3
-4/3*x = 20/3 // : -4/3
x = 20/3/(-4/3)
x = -5
x = -5
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