Let's evaluate each expression given the values:

1. Expression: $2x + 11$

   • Substitute $x = 0$: $2 \cdot 0 + 11 = 0 + 11 = 11$

2. Expression: $(2z + y) - 5$

   • Substitute $z = 20$ and $y = 21$: $(2 \cdot 20 + 21) - 5 = (40 + 21) - 5 = 61 - 5 = 56$

3. Expression: $|(y + z) - x|$

   • Substitute $x = 0$, $y = 21$, and $z = 20$: $|(21 + 20) - 0| = |41 - 0| = |41| = 41$

Final Answers:

1. $2x + 11 = 11$
2. $(2z + y) - 5 = 56$
3. $|(y + z) - x| = 41$

Would you like further details or have any other questions?

Related Questions:

1. How would the results change if $x$, $y$, or $z$ were negative?
2. What if $x$ were a non-zero value? How would that affect the first expression?
3. Can you find the result for $|x - (y + z)|$ with the same values?
4. What if we add another operation to these expressions? How would the results vary?
5. Can you explore similar expressions with powers, such as $2x^2 + 11$?

Tip: Absolute values make negative results positive, so they’re often used to measure "distance" between values, keeping outcomes non-negative.