18-6a=3a-3(a+3)

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Solution for 18-6a=3a-3(a+3) equation:


Simplifying
18 + -6a = 3a + -3(a + 3)

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

Reorder the terms:
18 + -6a = -9 + 3a + -3a

Combine like terms: 3a + -3a = 0
18 + -6a = -9 + 0
18 + -6a = -9

Solving
18 + -6a = -9

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + -6a = -9 + -18

Combine like terms: 18 + -18 = 0
0 + -6a = -9 + -18
-6a = -9 + -18

Combine like terms: -9 + -18 = -27
-6a = -27

Divide each side by '-6'.
a = 4.5

Simplifying
a = 4.5

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