7d+9=3d+25

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Solution for 7d+9=3d+25 equation:


Simplifying
7d + 9 = 3d + 25

Reorder the terms:
9 + 7d = 3d + 25

Reorder the terms:
9 + 7d = 25 + 3d

Solving
9 + 7d = 25 + 3d

Solving for variable 'd'.

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

Add '-3d' to each side of the equation.
9 + 7d + -3d = 25 + 3d + -3d

Combine like terms: 7d + -3d = 4d
9 + 4d = 25 + 3d + -3d

Combine like terms: 3d + -3d = 0
9 + 4d = 25 + 0
9 + 4d = 25

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

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

Combine like terms: 25 + -9 = 16
4d = 16

Divide each side by '4'.
d = 4

Simplifying
d = 4

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