12-2(a-1)=5+a

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Solution for 12-2(a-1)=5+a equation:


Simplifying
12 + -2(a + -1) = 5 + a

Reorder the terms:
12 + -2(-1 + a) = 5 + a
12 + (-1 * -2 + a * -2) = 5 + a
12 + (2 + -2a) = 5 + a

Combine like terms: 12 + 2 = 14
14 + -2a = 5 + a

Solving
14 + -2a = 5 + 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.
14 + -2a + -1a = 5 + a + -1a

Combine like terms: -2a + -1a = -3a
14 + -3a = 5 + a + -1a

Combine like terms: a + -1a = 0
14 + -3a = 5 + 0
14 + -3a = 5

Add '-14' to each side of the equation.
14 + -14 + -3a = 5 + -14

Combine like terms: 14 + -14 = 0
0 + -3a = 5 + -14
-3a = 5 + -14

Combine like terms: 5 + -14 = -9
-3a = -9

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

Simplifying
a = 3

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