10d-1=9d-10

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Solution for 10d-1=9d-10 equation:


Simplifying
10d + -1 = 9d + -10

Reorder the terms:
-1 + 10d = 9d + -10

Reorder the terms:
-1 + 10d = -10 + 9d

Solving
-1 + 10d = -10 + 9d

Solving for variable 'd'.

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

Add '-9d' to each side of the equation.
-1 + 10d + -9d = -10 + 9d + -9d

Combine like terms: 10d + -9d = 1d
-1 + 1d = -10 + 9d + -9d

Combine like terms: 9d + -9d = 0
-1 + 1d = -10 + 0
-1 + 1d = -10

Add '1' to each side of the equation.
-1 + 1 + 1d = -10 + 1

Combine like terms: -1 + 1 = 0
0 + 1d = -10 + 1
1d = -10 + 1

Combine like terms: -10 + 1 = -9
1d = -9

Divide each side by '1'.
d = -9

Simplifying
d = -9

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