-3(a-1)=-15-6a

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Solution for -3(a-1)=-15-6a equation:


Simplifying
-3(a + -1) = -15 + -6a

Reorder the terms:
-3(-1 + a) = -15 + -6a
(-1 * -3 + a * -3) = -15 + -6a
(3 + -3a) = -15 + -6a

Solving
3 + -3a = -15 + -6a

Solving for variable 'a'.

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

Add '6a' to each side of the equation.
3 + -3a + 6a = -15 + -6a + 6a

Combine like terms: -3a + 6a = 3a
3 + 3a = -15 + -6a + 6a

Combine like terms: -6a + 6a = 0
3 + 3a = -15 + 0
3 + 3a = -15

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

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

Combine like terms: -15 + -3 = -18
3a = -18

Divide each side by '3'.
a = -6

Simplifying
a = -6

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