Question

Evaluate each expression if x = -1, y = 3, and z = -4.
1. 16 - |2z + 1|
2. |x - y| + 4
3. |-3y + z| - x
4. 3 |z - x| + |2 - y|

Answer 1

Answer:

1. 16-(2z+1)

16-(2*(-4)+1)

16-(-8+1)

16-(-7)

16+7

23.

2. (x-y)+4

((-1)-3)+4

-4+4

0.

3. (-3y+z)-x

((-3*3)+(-4))-(-1)

{(-9)-4}+1

-13+1

-12.

4. 3(z-x)+(12-y)

3{(-4)-(-1)}+(12-3)

3{(-4)+1}+(9)

3(-3)+(9)

-9+9

0.

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