9d-8d-1=19

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Solution for 9d-8d-1=19 equation:


Simplifying
9d + -8d + -1 = 19

Reorder the terms:
-1 + 9d + -8d = 19

Combine like terms: 9d + -8d = 1d
-1 + 1d = 19

Solving
-1 + 1d = 19

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 + 1d = 19 + 1

Combine like terms: -1 + 1 = 0
0 + 1d = 19 + 1
1d = 19 + 1

Combine like terms: 19 + 1 = 20
1d = 20

Divide each side by '1'.
d = 20

Simplifying
d = 20

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