d-1=-8

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Solution for d-1=-8 equation: 


Simplifying
d + -1 = -8

Reorder the terms:
-1 + d = -8

Solving
-1 + d = -8

Solving for variable 'd'.

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

Add '1' to each side of the equation.
-1 + 1 + d = -8 + 1

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

Combine like terms: -8 + 1 = -7
d = -7

Simplifying
d = -7

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