12d+9=4d+25

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Solution for 12d+9=4d+25 equation:


Simplifying
12d + 9 = 4d + 25

Reorder the terms:
9 + 12d = 4d + 25

Reorder the terms:
9 + 12d = 25 + 4d

Solving
9 + 12d = 25 + 4d

Solving for variable 'd'.

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

Add '-4d' to each side of the equation.
9 + 12d + -4d = 25 + 4d + -4d

Combine like terms: 12d + -4d = 8d
9 + 8d = 25 + 4d + -4d

Combine like terms: 4d + -4d = 0
9 + 8d = 25 + 0
9 + 8d = 25

Add '-9' to each side of the equation.
9 + -9 + 8d = 25 + -9

Combine like terms: 9 + -9 = 0
0 + 8d = 25 + -9
8d = 25 + -9

Combine like terms: 25 + -9 = 16
8d = 16

Divide each side by '8'.
d = 2

Simplifying
d = 2

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