105=-7z

Solution for 105=-7z equation:

Simplifying
105 = -7z

Solving
105 = -7z

Solving for variable 'z'.

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

Add '7z' to each side of the equation.
105 + 7z = -7z + 7z

Combine like terms: -7z + 7z = 0
105 + 7z = 0

Add '-105' to each side of the equation.
105 + -105 + 7z = 0 + -105

Combine like terms: 105 + -105 = 0
0 + 7z = 0 + -105
7z = 0 + -105

Combine like terms: 0 + -105 = -105
7z = -105

Divide each side by '7'.
z = -15

Simplifying
z = -15