12-2(a-1)=5

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


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

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

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

Solving
14 + -2a = 5

Solving for variable 'a'.

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

Add '-14' to each side of the equation.
14 + -14 + -2a = 5 + -14

Combine like terms: 14 + -14 = 0
0 + -2a = 5 + -14
-2a = 5 + -14

Combine like terms: 5 + -14 = -9
-2a = -9

Divide each side by '-2'.
a = 4.5

Simplifying
a = 4.5

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