Evaluate: |(-2)-(-6)|

Expression: $|\left( -2 \right)-\left( -6 \right)|$

Remove unnecessary parentheses

$|-2-\left( -6 \right)|$

When there is a $-$ in front of an expression in parentheses, change the sign of each term of the expression and remove the parentheses

$|-2+6|$

Calculate the sum

$|4|$

The absolute value of any number is always positive

$4$