12d+9=15d+9

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


Simplifying
12d + 9 = 15d + 9

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

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

Add '-9' to each side of the equation.
9 + -9 + 12d = 9 + -9 + 15d

Combine like terms: 9 + -9 = 0
0 + 12d = 9 + -9 + 15d
12d = 9 + -9 + 15d

Combine like terms: 9 + -9 = 0
12d = 0 + 15d
12d = 15d

Solving
12d = 15d

Solving for variable 'd'.

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

Add '-15d' to each side of the equation.
12d + -15d = 15d + -15d

Combine like terms: 12d + -15d = -3d
-3d = 15d + -15d

Combine like terms: 15d + -15d = 0
-3d = 0

Divide each side by '-3'.
d = 0

Simplifying
d = 0

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