2d+18=16-4(d+7)

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Solution for 2d+18=16-4(d+7) equation:


Simplifying
2d + 18 = 16 + -4(d + 7)

Reorder the terms:
18 + 2d = 16 + -4(d + 7)

Reorder the terms:
18 + 2d = 16 + -4(7 + d)
18 + 2d = 16 + (7 * -4 + d * -4)
18 + 2d = 16 + (-28 + -4d)

Combine like terms: 16 + -28 = -12
18 + 2d = -12 + -4d

Solving
18 + 2d = -12 + -4d

Solving for variable 'd'.

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

Add '4d' to each side of the equation.
18 + 2d + 4d = -12 + -4d + 4d

Combine like terms: 2d + 4d = 6d
18 + 6d = -12 + -4d + 4d

Combine like terms: -4d + 4d = 0
18 + 6d = -12 + 0
18 + 6d = -12

Add '-18' to each side of the equation.
18 + -18 + 6d = -12 + -18

Combine like terms: 18 + -18 = 0
0 + 6d = -12 + -18
6d = -12 + -18

Combine like terms: -12 + -18 = -30
6d = -30

Divide each side by '6'.
d = -5

Simplifying
d = -5

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