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4*x-4/7 = -228/7 // + -228/7
4*x-4/7-(-228/7) = 0
4*x-4/7+228/7 = 0
4*x+32 = 0 // - 32
4*x = -32 // : 4
x = -32/4
x = -8
x = -8
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