-0.5(d-1.2)=2.5

Solution for -0.5(d-1.2)=2.5 equation:

Simplifying
-0.5(d + -1.2) = 2.5

Reorder the terms:
-0.5(-1.2 + d) = 2.5
(-1.2 * -0.5 + d * -0.5) = 2.5
(0.6 + -0.5d) = 2.5

Solving
0.6 + -0.5d = 2.5

Solving for variable 'd'.

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

Add '-0.6' to each side of the equation.
0.6 + -0.6 + -0.5d = 2.5 + -0.6

Combine like terms: 0.6 + -0.6 = 0.0
0.0 + -0.5d = 2.5 + -0.6
-0.5d = 2.5 + -0.6

Combine like terms: 2.5 + -0.6 = 1.9
-0.5d = 1.9

Divide each side by '-0.5'.
d = -3.8

Simplifying
d = -3.8