2d-9=d-8

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Solution for 2d-9=d-8 equation:


Simplifying
2d + -9 = d + -8

Reorder the terms:
-9 + 2d = d + -8

Reorder the terms:
-9 + 2d = -8 + d

Solving
-9 + 2d = -8 + d

Solving for variable 'd'.

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

Add '-1d' to each side of the equation.
-9 + 2d + -1d = -8 + d + -1d

Combine like terms: 2d + -1d = 1d
-9 + 1d = -8 + d + -1d

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

Add '9' to each side of the equation.
-9 + 9 + 1d = -8 + 9

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

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

Divide each side by '1'.
d = 1

Simplifying
d = 1

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