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

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


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

Reorder the terms:
-2(3 + a) + -1a = -3
(3 * -2 + a * -2) + -1a = -3
(-6 + -2a) + -1a = -3

Combine like terms: -2a + -1a = -3a
-6 + -3a = -3

Solving
-6 + -3a = -3

Solving for variable 'a'.

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

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

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

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

Divide each side by '-3'.
a = -1

Simplifying
a = -1

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