3+6(1-2d)=-25

Solution for 3+6(1-2d)=-25 equation:

Simplifying
3 + 6(1 + -2d) = -25
3 + (1 * 6 + -2d * 6) = -25
3 + (6 + -12d) = -25

Combine like terms: 3 + 6 = 9
9 + -12d = -25

Solving
9 + -12d = -25

Solving for variable 'd'.

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

Add '-9' to each side of the equation.
9 + -9 + -12d = -25 + -9

Combine like terms: 9 + -9 = 0
0 + -12d = -25 + -9
-12d = -25 + -9

Combine like terms: -25 + -9 = -34
-12d = -34

Divide each side by '-12'.
d = 2.833333333

Simplifying
d = 2.833333333