1.2=-3d

Solution for 1.2=-3d equation:

Simplifying
1.2 = -3d

Solving
1.2 = -3d

Solving for variable 'd'.

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

Add '3d' to each side of the equation.
1.2 + 3d = -3d + 3d

Combine like terms: -3d + 3d = 0
1.2 + 3d = 0

Add '-1.2' to each side of the equation.
1.2 + -1.2 + 3d = 0 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + 3d = 0 + -1.2
3d = 0 + -1.2

Combine like terms: 0 + -1.2 = -1.2
3d = -1.2

Divide each side by '3'.
d = -0.4

Simplifying
d = -0.4