6=0.8d

Solution for 6=0.8d equation:

Simplifying
6 = 0.8d

Solving
6 = 0.8d

Solving for variable 'd'.

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

Add '-0.8d' to each side of the equation.
6 + -0.8d = 0.8d + -0.8d

Combine like terms: 0.8d + -0.8d = 0.0
6 + -0.8d = 0.0

Add '-6' to each side of the equation.
6 + -6 + -0.8d = 0.0 + -6

Combine like terms: 6 + -6 = 0
0 + -0.8d = 0.0 + -6
-0.8d = 0.0 + -6

Combine like terms: 0.0 + -6 = -6
-0.8d = -6

Divide each side by '-0.8'.
d = 7.5

Simplifying
d = 7.5