9(a-1)+3(a-1)-2=

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Solution for 9(a-1)+3(a-1)-2= equation:


Simplifying
9(a + -1) + 3(a + -1) + -2 = 0

Reorder the terms:
9(-1 + a) + 3(a + -1) + -2 = 0
(-1 * 9 + a * 9) + 3(a + -1) + -2 = 0
(-9 + 9a) + 3(a + -1) + -2 = 0

Reorder the terms:
-9 + 9a + 3(-1 + a) + -2 = 0
-9 + 9a + (-1 * 3 + a * 3) + -2 = 0
-9 + 9a + (-3 + 3a) + -2 = 0

Reorder the terms:
-9 + -3 + -2 + 9a + 3a = 0

Combine like terms: -9 + -3 = -12
-12 + -2 + 9a + 3a = 0

Combine like terms: -12 + -2 = -14
-14 + 9a + 3a = 0

Combine like terms: 9a + 3a = 12a
-14 + 12a = 0

Solving
-14 + 12a = 0

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 + 12a = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 12a = 0 + 14
12a = 0 + 14

Combine like terms: 0 + 14 = 14
12a = 14

Divide each side by '12'.
a = 1.166666667

Simplifying
a = 1.166666667

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