2(d+9)=-(d-6)

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Solution for 2(d+9)=-(d-6) equation:


Simplifying
2(d + 9) = -1(d + -6)

Reorder the terms:
2(9 + d) = -1(d + -6)
(9 * 2 + d * 2) = -1(d + -6)
(18 + 2d) = -1(d + -6)

Reorder the terms:
18 + 2d = -1(-6 + d)
18 + 2d = (-6 * -1 + d * -1)
18 + 2d = (6 + -1d)

Solving
18 + 2d = 6 + -1d

Solving for variable 'd'.

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

Add 'd' to each side of the equation.
18 + 2d + d = 6 + -1d + d

Combine like terms: 2d + d = 3d
18 + 3d = 6 + -1d + d

Combine like terms: -1d + d = 0
18 + 3d = 6 + 0
18 + 3d = 6

Add '-18' to each side of the equation.
18 + -18 + 3d = 6 + -18

Combine like terms: 18 + -18 = 0
0 + 3d = 6 + -18
3d = 6 + -18

Combine like terms: 6 + -18 = -12
3d = -12

Divide each side by '3'.
d = -4

Simplifying
d = -4

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