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2.5*x = (1/3)*(4*x+7) // - (1/3)*(4*x+7)
2.5*x-((1/3)*(4*x+7)) = 0
(-1/3)*(4*x+7)+2.5*x = 0
2.5*x-1/3*(4*x+7) = 0
2.5*x-1/3*(4*x+7) = 0
1.16666667*x-7/3 = 0
1.16666667*x-7/3 = 0
1.16666667*x-7/3 = 0 // + 7/3
1.16666667*x = 7/3 // : 1.16666667
x = 7/3/1.16666667
x = 1.99999999
x = 1.99999999
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