2(a+9)=-2

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Solution for 2(a+9)=-2 equation: 


Simplifying
2(a + 9) = -2

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

Solving
18 + 2a = -2

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 + 2a = -2 + -18

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

Combine like terms: -2 + -18 = -20
2a = -20

Divide each side by '2'.
a = -10

Simplifying
a = -10

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