d-15=13-6d

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Solution for d-15=13-6d equation:


Simplifying
d + -15 = 13 + -6d

Reorder the terms:
-15 + d = 13 + -6d

Solving
-15 + d = 13 + -6d

Solving for variable 'd'.

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

Add '6d' to each side of the equation.
-15 + d + 6d = 13 + -6d + 6d

Combine like terms: d + 6d = 7d
-15 + 7d = 13 + -6d + 6d

Combine like terms: -6d + 6d = 0
-15 + 7d = 13 + 0
-15 + 7d = 13

Add '15' to each side of the equation.
-15 + 15 + 7d = 13 + 15

Combine like terms: -15 + 15 = 0
0 + 7d = 13 + 15
7d = 13 + 15

Combine like terms: 13 + 15 = 28
7d = 28

Divide each side by '7'.
d = 4

Simplifying
d = 4

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