Add: 12+1x\frac{1}{2} + \frac{1}{x}21+x1 for x≠0x \neq 0x=0.
1+x2x\frac{1+x}{2x}2x1+x
x+22x\frac{x+2}{2x}2xx+2
2+x2x\frac{2+x}{2x}2x2+x
x2x\frac{x}{2x}2xx