17d-9(2-a)=12a+1d

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Solution for 17d-9(2-a)=12a+1d equation:


Simplifying
17d + -9(2 + -1a) = 12a + 1d
17d + (2 * -9 + -1a * -9) = 12a + 1d
17d + (-18 + 9a) = 12a + 1d

Reorder the terms:
-18 + 9a + 17d = 12a + 1d

Solving
-18 + 9a + 17d = 12a + 1d

Solving for variable 'a'.

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

Add '-12a' to each side of the equation.
-18 + 9a + -12a + 17d = 12a + -12a + 1d

Combine like terms: 9a + -12a = -3a
-18 + -3a + 17d = 12a + -12a + 1d

Combine like terms: 12a + -12a = 0
-18 + -3a + 17d = 0 + 1d
-18 + -3a + 17d = 1d

Add '18' to each side of the equation.
-18 + -3a + 18 + 17d = 18 + 1d

Reorder the terms:
-18 + 18 + -3a + 17d = 18 + 1d

Combine like terms: -18 + 18 = 0
0 + -3a + 17d = 18 + 1d
-3a + 17d = 18 + 1d

Add '-17d' to each side of the equation.
-3a + 17d + -17d = 18 + 1d + -17d

Combine like terms: 17d + -17d = 0
-3a + 0 = 18 + 1d + -17d
-3a = 18 + 1d + -17d

Combine like terms: 1d + -17d = -16d
-3a = 18 + -16d

Divide each side by '-3'.
a = -6 + 5.333333333d

Simplifying
a = -6 + 5.333333333d

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