11-3(a-1)-9=-57

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Solution for 11-3(a-1)-9=-57 equation: 


Simplifying
11 + -3(a + -1) + -9 = -57

Reorder the terms:
11 + -3(-1 + a) + -9 = -57
11 + (-1 * -3 + a * -3) + -9 = -57
11 + (3 + -3a) + -9 = -57

Reorder the terms:
11 + 3 + -9 + -3a = -57

Combine like terms: 11 + 3 = 14
14 + -9 + -3a = -57

Combine like terms: 14 + -9 = 5
5 + -3a = -57

Solving
5 + -3a = -57

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + -3a = -57 + -5

Combine like terms: 5 + -5 = 0
0 + -3a = -57 + -5
-3a = -57 + -5

Combine like terms: -57 + -5 = -62
-3a = -62

Divide each side by '-3'.
a = 20.66666667

Simplifying
a = 20.66666667

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