1-9d=12

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Solution for 1-9d=12 equation: 


Simplifying
1 + -9d = 12

Solving
1 + -9d = 12

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 + -9d = 12 + -1

Combine like terms: 1 + -1 = 0
0 + -9d = 12 + -1
-9d = 12 + -1

Combine like terms: 12 + -1 = 11
-9d = 11

Divide each side by '-9'.
d = -1.222222222

Simplifying
d = -1.222222222

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