2[d-(4d+9)+3]=2(d+6)

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Solution for 2[d-(4d+9)+3]=2(d+6) equation:


Simplifying
2[d + -1(4d + 9) + 3] = 2(d + 6)

Reorder the terms:
2[d + -1(9 + 4d) + 3] = 2(d + 6)
2[d + (9 * -1 + 4d * -1) + 3] = 2(d + 6)
2[d + (-9 + -4d) + 3] = 2(d + 6)

Reorder the terms:
2[-9 + 3 + d + -4d] = 2(d + 6)

Combine like terms: -9 + 3 = -6
2[-6 + d + -4d] = 2(d + 6)

Combine like terms: d + -4d = -3d
2[-6 + -3d] = 2(d + 6)
[-6 * 2 + -3d * 2] = 2(d + 6)
[-12 + -6d] = 2(d + 6)

Reorder the terms:
-12 + -6d = 2(6 + d)
-12 + -6d = (6 * 2 + d * 2)
-12 + -6d = (12 + 2d)

Solving
-12 + -6d = 12 + 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.
-12 + -6d + -2d = 12 + 2d + -2d

Combine like terms: -6d + -2d = -8d
-12 + -8d = 12 + 2d + -2d

Combine like terms: 2d + -2d = 0
-12 + -8d = 12 + 0
-12 + -8d = 12

Add '12' to each side of the equation.
-12 + 12 + -8d = 12 + 12

Combine like terms: -12 + 12 = 0
0 + -8d = 12 + 12
-8d = 12 + 12

Combine like terms: 12 + 12 = 24
-8d = 24

Divide each side by '-8'.
d = -3

Simplifying
d = -3

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