Lumen OHM

Simplify:

$\displaystyle {\left|{30}-{25}\right|}-{\left|{23}-{2}\right|}$

$\displaystyle {\left|{25}-{21}\right|}+{\left|{9}-{2}\right|}$

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Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity

Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity