4/3x-(1-80%)x=4.95

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4/3x-(1-80%)x=4.954/3x-(1-80%)x=4.954/3x-(1-80%)x=4.95X=293/68

4/3x-(1-80%)x=4.95
4/3x-(1-80%)x=4.95

4/3x-(1-80%)x=4.95
X=293/68