1-6(a+1)=9+a

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Solution for 1-6(a+1)=9+a equation:


Simplifying
1 + -6(a + 1) = 9 + a

Reorder the terms:
1 + -6(1 + a) = 9 + a
1 + (1 * -6 + a * -6) = 9 + a
1 + (-6 + -6a) = 9 + a

Combine like terms: 1 + -6 = -5
-5 + -6a = 9 + a

Solving
-5 + -6a = 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.
-5 + -6a + -1a = 9 + a + -1a

Combine like terms: -6a + -1a = -7a
-5 + -7a = 9 + a + -1a

Combine like terms: a + -1a = 0
-5 + -7a = 9 + 0
-5 + -7a = 9

Add '5' to each side of the equation.
-5 + 5 + -7a = 9 + 5

Combine like terms: -5 + 5 = 0
0 + -7a = 9 + 5
-7a = 9 + 5

Combine like terms: 9 + 5 = 14
-7a = 14

Divide each side by '-7'.
a = -2

Simplifying
a = -2

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