4(d+3)7d=

Solution for 4(d+3)7d= equation:

Simplifying
4(d + 3) * 7d = 0

Reorder the terms:
4(3 + d) * 7d = 0

Reorder the terms for easier multiplication:
4 * 7d(3 + d) = 0

Multiply 4 * 7
28d(3 + d) = 0
(3 * 28d + d * 28d) = 0
(84d + 28d2) = 0

Solving
84d + 28d2 = 0

Solving for variable 'd'.

Factor out the Greatest Common Factor (GCF), '28d'.
28d(3 + d) = 0

Ignore the factor 28.
Subproblem 1
Set the factor 'd' equal to zero and attempt to solve:

Simplifying
d = 0

Solving
d = 0

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

Simplifying
d = 0
Subproblem 2
Set the factor '(3 + d)' equal to zero and attempt to solve:

Simplifying
3 + d = 0

Solving
3 + d = 0

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

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

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

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

Simplifying
d = -3
Solution
d = {0, -3}