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(1/3)*x = (2/5)*X+2/3 // - (2/5)*X+2/3
(1/3)*x-((2/5)*X)-(2/3) = 0
(-2/5)*X+(1/3)*x-2/3 = 0
1/3*x-2/5*X-2/3 = 0 // + -2/5*X-2/3
1/3*x = -(-2/5*X-2/3) // : 1/3
x = (-(-2/5*X-2/3))/1/3
x = 3*(2/3-(-2/5*X))
x = 3*(2/3-(-2/5*X))
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