42+7z=3z

Solution for 42+7z=3z equation:

Simplifying
42 + 7z = 3z

Solving
42 + 7z = 3z

Solving for variable 'z'.

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

Add '-3z' to each side of the equation.
42 + 7z + -3z = 3z + -3z

Combine like terms: 7z + -3z = 4z
42 + 4z = 3z + -3z

Combine like terms: 3z + -3z = 0
42 + 4z = 0

Add '-42' to each side of the equation.
42 + -42 + 4z = 0 + -42

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

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

Divide each side by '4'.
z = -10.5

Simplifying
z = -10.5