(d-9)-(3d-1)=

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Solution for (d-9)-(3d-1)= equation:


Simplifying
(d + -9) + -1(3d + -1) = 0

Reorder the terms:
(-9 + d) + -1(3d + -1) = 0

Remove parenthesis around (-9 + d)
-9 + d + -1(3d + -1) = 0

Reorder the terms:
-9 + d + -1(-1 + 3d) = 0
-9 + d + (-1 * -1 + 3d * -1) = 0
-9 + d + (1 + -3d) = 0

Reorder the terms:
-9 + 1 + d + -3d = 0

Combine like terms: -9 + 1 = -8
-8 + d + -3d = 0

Combine like terms: d + -3d = -2d
-8 + -2d = 0

Solving
-8 + -2d = 0

Solving for variable 'd'.

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

Add '8' to each side of the equation.
-8 + 8 + -2d = 0 + 8

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

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

Divide each side by '-2'.
d = -4

Simplifying
d = -4

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