When x = 10 and y = 20, what is the value of
 $\frac{1}{2x^23y}$  ?

When x = 75 and y = 1, what is the value of

When x = 3, y = 4, and z = 0, what is the value of
 $\frac{3x+2xy+3y}{6z}$  ?

When x = 1, y = 2, and z = 3, what is the value of

(x − 1)(y − 2)(z − 3) ?

When x = 2, y = 2, and z = 2, what is the value of

3xy − 3xz + 3zy ?

When x = 2, y = 1, and z = 3, what is the value of
 $15x^2+23y^{10}+z^4$  ?

When x = 2, what is the value of

When  $x\ =\ \frac{1}{2}$  , what is the value of  $3x^3$  ?

When x = 20, what is the value of

Solve for x in the following equation:
 $x\ =\ \frac{1}{2}\left[\left(-8\right)^2-4\right]$  

Solve for x in the following equation:

Solve for x in the following equation: 
 $x=−15(−7)$  

Solve for x in the following equation:
 $2x=\frac{1}{2}\left(3+5^2\right)$  

Solve for x in the following equation:
 $x=\ \frac{1}{2}+\frac{1}{3}+\frac{1}{4}$  

Solve for x in the following equation:
 $x+2=14$