18+2a=6-(-6a)

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Solution for 18+2a=6-(-6a) equation:


Simplifying
18 + 2a = 6 + -1(-6a)

Remove parenthesis around (-6a)
18 + 2a = 6 + -1 * -6a

Multiply -1 * -6
18 + 2a = 6 + 6a

Solving
18 + 2a = 6 + 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.
18 + 2a + -6a = 6 + 6a + -6a

Combine like terms: 2a + -6a = -4a
18 + -4a = 6 + 6a + -6a

Combine like terms: 6a + -6a = 0
18 + -4a = 6 + 0
18 + -4a = 6

Add '-18' to each side of the equation.
18 + -18 + -4a = 6 + -18

Combine like terms: 18 + -18 = 0
0 + -4a = 6 + -18
-4a = 6 + -18

Combine like terms: 6 + -18 = -12
-4a = -12

Divide each side by '-4'.
a = 3

Simplifying
a = 3

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