-8-2(a+1)=9+a

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Solution for -8-2(a+1)=9+a equation:


Simplifying
-8 + -2(a + 1) = 9 + a

Reorder the terms:
-8 + -2(1 + a) = 9 + a
-8 + (1 * -2 + a * -2) = 9 + a
-8 + (-2 + -2a) = 9 + a

Combine like terms: -8 + -2 = -10
-10 + -2a = 9 + a

Solving
-10 + -2a = 9 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-10 + -2a + -1a = 9 + a + -1a

Combine like terms: -2a + -1a = -3a
-10 + -3a = 9 + a + -1a

Combine like terms: a + -1a = 0
-10 + -3a = 9 + 0
-10 + -3a = 9

Add '10' to each side of the equation.
-10 + 10 + -3a = 9 + 10

Combine like terms: -10 + 10 = 0
0 + -3a = 9 + 10
-3a = 9 + 10

Combine like terms: 9 + 10 = 19
-3a = 19

Divide each side by '-3'.
a = -6.333333333

Simplifying
a = -6.333333333

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