7d+3(d+1)=

Solution for 7d+3(d+1)= equation:

Simplifying
7d + 3(d + 1) = 0

Reorder the terms:
7d + 3(1 + d) = 0
7d + (1 * 3 + d * 3) = 0
7d + (3 + 3d) = 0

Reorder the terms:
3 + 7d + 3d = 0

Combine like terms: 7d + 3d = 10d
3 + 10d = 0

Solving
3 + 10d = 0

Solving for variable 'd'.

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

Add '-3' to each side of the equation.
3 + -3 + 10d = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 10d = 0 + -3
10d = 0 + -3

Combine like terms: 0 + -3 = -3
10d = -3

Divide each side by '10'.
d = -0.3

Simplifying
d = -0.3