9d+4d+d+9=2d

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Solution for 9d+4d+d+9=2d equation:


Simplifying
9d + 4d + d + 9 = 2d

Reorder the terms:
9 + 9d + 4d + d = 2d

Combine like terms: 9d + 4d = 13d
9 + 13d + d = 2d

Combine like terms: 13d + d = 14d
9 + 14d = 2d

Solving
9 + 14d = 2d

Solving for variable 'd'.

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

Add '-2d' to each side of the equation.
9 + 14d + -2d = 2d + -2d

Combine like terms: 14d + -2d = 12d
9 + 12d = 2d + -2d

Combine like terms: 2d + -2d = 0
9 + 12d = 0

Add '-9' to each side of the equation.
9 + -9 + 12d = 0 + -9

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

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

Divide each side by '12'.
d = -0.75

Simplifying
d = -0.75

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