4d+9=2d-6

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Solution for 4d+9=2d-6 equation:


Simplifying
4d + 9 = 2d + -6

Reorder the terms:
9 + 4d = 2d + -6

Reorder the terms:
9 + 4d = -6 + 2d

Solving
9 + 4d = -6 + 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 + 4d + -2d = -6 + 2d + -2d

Combine like terms: 4d + -2d = 2d
9 + 2d = -6 + 2d + -2d

Combine like terms: 2d + -2d = 0
9 + 2d = -6 + 0
9 + 2d = -6

Add '-9' to each side of the equation.
9 + -9 + 2d = -6 + -9

Combine like terms: 9 + -9 = 0
0 + 2d = -6 + -9
2d = -6 + -9

Combine like terms: -6 + -9 = -15
2d = -15

Divide each side by '2'.
d = -7.5

Simplifying
d = -7.5

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