Together

Together[ expr ] combines the fractions in an expression into a single fraction.

Usages

`Together[ expr ]`

Together[ expr ] writes expr as one fraction with a common denominator. Students get step-by-step guidance for this task. In a script, wrap the command in Simplify.

Example	in	rendered
A fraction and a variable.	`Simplify[ Together[2/x + y] ]`	$\frac{2+xy}{x}$
Two fractions with variables.	`Simplify[ Together[1/x + 1/y] ]`	$\frac{y+x}{xy}$
A difference of fractions.	`Simplify[ Together[1/(x+1) - 1/(x-1)] ]`	$\text{-}\frac{2}{\left(x+1\right)\left(x-1\right)}$
Fractions of numbers.	`Simplify[ Together[1/2 + 1/3] ]`	$\frac{5}{6}$

Details

Without Simplify, the command is not calculated: in a script, Together[ 2/x + y ] stays unevaluated.
No fractions: an expression without fractions is not changed: Simplify[ Together[x + 1] ] gives x+1.

See also: Apart, Expand, Factor, Simplify