12d+9=6d+15

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Solution for 12d+9=6d+15 equation:


Simplifying
12d + 9 = 6d + 15

Reorder the terms:
9 + 12d = 6d + 15

Reorder the terms:
9 + 12d = 15 + 6d

Solving
9 + 12d = 15 + 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.
9 + 12d + -6d = 15 + 6d + -6d

Combine like terms: 12d + -6d = 6d
9 + 6d = 15 + 6d + -6d

Combine like terms: 6d + -6d = 0
9 + 6d = 15 + 0
9 + 6d = 15

Add '-9' to each side of the equation.
9 + -9 + 6d = 15 + -9

Combine like terms: 9 + -9 = 0
0 + 6d = 15 + -9
6d = 15 + -9

Combine like terms: 15 + -9 = 6
6d = 6

Divide each side by '6'.
d = 1

Simplifying
d = 1

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