2a+6=-18

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Solution for 2a+6=-18 equation: 


Simplifying
2a + 6 = -18

Reorder the terms:
6 + 2a = -18

Solving
6 + 2a = -18

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 2a = -18 + -6

Combine like terms: 6 + -6 = 0
0 + 2a = -18 + -6
2a = -18 + -6

Combine like terms: -18 + -6 = -24
2a = -24

Divide each side by '2'.
a = -12

Simplifying
a = -12

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