-9=6d+12-2d+1

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Solution for -9=6d+12-2d+1 equation:


Simplifying
-9 = 6d + 12 + -2d + 1

Reorder the terms:
-9 = 12 + 1 + 6d + -2d

Combine like terms: 12 + 1 = 13
-9 = 13 + 6d + -2d

Combine like terms: 6d + -2d = 4d
-9 = 13 + 4d

Solving
-9 = 13 + 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.
-9 + -4d = 13 + 4d + -4d

Combine like terms: 4d + -4d = 0
-9 + -4d = 13 + 0
-9 + -4d = 13

Add '9' to each side of the equation.
-9 + 9 + -4d = 13 + 9

Combine like terms: -9 + 9 = 0
0 + -4d = 13 + 9
-4d = 13 + 9

Combine like terms: 13 + 9 = 22
-4d = 22

Divide each side by '-4'.
d = -5.5

Simplifying
d = -5.5

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