82=42+4z

Solution for 82=42+4z equation:

Simplifying
82 = 42 + 4z

Solving
82 = 42 + 4z

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '-4z' to each side of the equation.
82 + -4z = 42 + 4z + -4z

Combine like terms: 4z + -4z = 0
82 + -4z = 42 + 0
82 + -4z = 42

Add '-82' to each side of the equation.
82 + -82 + -4z = 42 + -82

Combine like terms: 82 + -82 = 0
0 + -4z = 42 + -82
-4z = 42 + -82

Combine like terms: 42 + -82 = -40
-4z = -40

Divide each side by '-4'.
z = 10

Simplifying
z = 10