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(3/5)*x-(2/3) = -11/30 // + -11/30
(3/5)*x-(2/3)-(-11/30) = 0
(3/5)*x-2/3+11/30 = 0
3/5*x-3/10 = 0 // + 3/10
3/5*x = 3/10 // : 3/5
x = 3/10/3/5
x = 1/2
x = 1/2
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