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

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


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

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

Combine like terms: 8 + -2 = 6
6 + -2a = 9 + 1a

Solving
6 + -2a = 9 + 1a

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.
6 + -2a + -1a = 9 + 1a + -1a

Combine like terms: -2a + -1a = -3a
6 + -3a = 9 + 1a + -1a

Combine like terms: 1a + -1a = 0
6 + -3a = 9 + 0
6 + -3a = 9

Add '-6' to each side of the equation.
6 + -6 + -3a = 9 + -6

Combine like terms: 6 + -6 = 0
0 + -3a = 9 + -6
-3a = 9 + -6

Combine like terms: 9 + -6 = 3
-3a = 3

Divide each side by '-3'.
a = -1

Simplifying
a = -1

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