4d+9-d-8=d

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Solution for 4d+9-d-8=d equation:


Simplifying
4d + 9 + -1d + -8 = d

Reorder the terms:
9 + -8 + 4d + -1d = d

Combine like terms: 9 + -8 = 1
1 + 4d + -1d = d

Combine like terms: 4d + -1d = 3d
1 + 3d = d

Solving
1 + 3d = d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
1 + 3d + -1d = d + -1d

Combine like terms: 3d + -1d = 2d
1 + 2d = d + -1d

Combine like terms: d + -1d = 0
1 + 2d = 0

Add '-1' to each side of the equation.
1 + -1 + 2d = 0 + -1

Combine like terms: 1 + -1 = 0
0 + 2d = 0 + -1
2d = 0 + -1

Combine like terms: 0 + -1 = -1
2d = -1

Divide each side by '2'.
d = -0.5

Simplifying
d = -0.5

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