7z-0.3=8z

Solution for 7z-0.3=8z equation:

Simplifying
7z + -0.3 = 8z

Reorder the terms:
-0.3 + 7z = 8z

Solving
-0.3 + 7z = 8z

Solving for variable 'z'.

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

Add '-8z' to each side of the equation.
-0.3 + 7z + -8z = 8z + -8z

Combine like terms: 7z + -8z = -1z
-0.3 + -1z = 8z + -8z

Combine like terms: 8z + -8z = 0
-0.3 + -1z = 0

Add '0.3' to each side of the equation.
-0.3 + 0.3 + -1z = 0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + -1z = 0 + 0.3
-1z = 0 + 0.3

Combine like terms: 0 + 0.3 = 0.3
-1z = 0.3

Divide each side by '-1'.
z = -0.3

Simplifying
z = -0.3