d=(28mph)(3days)

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Solution for d=(28mph)(3days) equation: 


Simplifying
d = (28mph)(3days)

Remove parenthesis around (28hmp)
d = 28hmp(3days)

Remove parenthesis around (3adsy)
d = 28hmp * 3adsy

Reorder the terms for easier multiplication:
d = 28 * 3hmp * adsy

Multiply 28 * 3
d = 84hmp * adsy

Multiply hmp * adsy
d = 84adhmpsy

Solving
d = 84adhmpsy

Solving for variable 'd'.

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

Add '-84adhmpsy' to each side of the equation.
-84adhmpsy + d = 84adhmpsy + -84adhmpsy

Combine like terms: 84adhmpsy + -84adhmpsy = 0
-84adhmpsy + d = 0

Factor out the Greatest Common Factor (GCF), 'd'.
d(-84ahmpsy + 1) = 0


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 '(-84ahmpsy + 1)' equal to zero and attempt to solve:

Simplifying
-84ahmpsy + 1 = 0

Reorder the terms:
1 + -84ahmpsy = 0

Solving
1 + -84ahmpsy = 0

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

Add '-1' to each side of the equation.
1 + -1 + -84ahmpsy = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -84ahmpsy = 0 + -1
-84ahmpsy = 0 + -1

Combine like terms: 0 + -1 = -1
-84ahmpsy = -1

Add '84ahmpsy' to each side of the equation.
-84ahmpsy + 84ahmpsy = -1 + 84ahmpsy

Combine like terms: -84ahmpsy + 84ahmpsy = 0
0 = -1 + 84ahmpsy

Simplifying
0 = -1 + 84ahmpsy

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Solution
d = {0}

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