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Solve the equation: 2x+2x+1+2x+2+2x+3=152{ 2 }^{ x }+{ 2 }^{ x+1 }+{ 2 }^{ x+2 }+{ 2 }^{ x+3 }=\frac { 15 }{ 2 }2x+2x+1+2x+2+2x+3=215
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