12-3(a-1)=17

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Solution for 12-3(a-1)=17 equation:


Simplifying
12 + -3(a + -1) = 17

Reorder the terms:
12 + -3(-1 + a) = 17
12 + (-1 * -3 + a * -3) = 17
12 + (3 + -3a) = 17

Combine like terms: 12 + 3 = 15
15 + -3a = 17

Solving
15 + -3a = 17

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + -3a = 17 + -15

Combine like terms: 15 + -15 = 0
0 + -3a = 17 + -15
-3a = 17 + -15

Combine like terms: 17 + -15 = 2
-3a = 2

Divide each side by '-3'.
a = -0.6666666667

Simplifying
a = -0.6666666667

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