Question

x+x+xsupra 2+x supra 4+1

Answer 1

 $^{4)}x\,+\,^{4)}x\,+\,\frac{^{2)}x}{2}\,+\,\frac{^{1)}x}{4}\,+\,^{4)}1 =\frac{4x+4x+2x+x+4}{4}=\frac{11x+4}{4}$