2(a+1)=-18

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Solution for 2(a+1)=-18 equation: 


Simplifying
2(a + 1) = -18

Reorder the terms:
2(1 + a) = -18
(1 * 2 + a * 2) = -18
(2 + 2a) = -18

Solving
2 + 2a = -18

Solving for variable 'a'.

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

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

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

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

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

Simplifying
a = -10

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