{a \above{2pt} b+1}
The \above command is used in LaTeX to create fractions with custom spacing. In the expression {a \above{2pt} b+1}, it represents a fraction where 'a' is the numerator and 'b+1' is the denominator, with a 2-point space above the fraction line.
Fraction with x as numerator and y+2 as denominator, with 2pt space above the line.
{x \above{2pt} y+2}
Fraction with m+n as numerator and k as denominator, with 2pt space above the line.
{m+n \above{2pt} k}
Fraction with p as numerator and q+r as denominator, with 2pt space above the line.
{p \above{2pt} q+r}