3D - 2

-3d-1.2=0.9 how do you solve this problem?

i don't get it? can someone help me?

Public Comments

1. -3d-1.2=0.9 -3d=2.1 d=-0.7
2. -3d - 1.2 = 0.9 => 3d = -2.1 => d = -0.7
3. Add 1.2 to both sides. -3d - 1.2 + 1.2 = 0.9 + 1.2 -3d = 2.1 d = -0.7