23=2(3a-9)

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Solution for 23=2(3a-9) equation:


Simplifying
23 = 2(3a + -9)

Reorder the terms:
23 = 2(-9 + 3a)
23 = (-9 * 2 + 3a * 2)
23 = (-18 + 6a)

Solving
23 = -18 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
23 + -6a = -18 + 6a + -6a

Combine like terms: 6a + -6a = 0
23 + -6a = -18 + 0
23 + -6a = -18

Add '-23' to each side of the equation.
23 + -23 + -6a = -18 + -23

Combine like terms: 23 + -23 = 0
0 + -6a = -18 + -23
-6a = -18 + -23

Combine like terms: -18 + -23 = -41
-6a = -41

Divide each side by '-6'.
a = 6.833333333

Simplifying
a = 6.833333333

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