-9-6a-9=-7a-28

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Solution for -9-6a-9=-7a-28 equation:


Simplifying
-9 + -6a + -9 = -7a + -28

Reorder the terms:
-9 + -9 + -6a = -7a + -28

Combine like terms: -9 + -9 = -18
-18 + -6a = -7a + -28

Reorder the terms:
-18 + -6a = -28 + -7a

Solving
-18 + -6a = -28 + -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
-18 + -6a + 7a = -28 + -7a + 7a

Combine like terms: -6a + 7a = 1a
-18 + 1a = -28 + -7a + 7a

Combine like terms: -7a + 7a = 0
-18 + 1a = -28 + 0
-18 + 1a = -28

Add '18' to each side of the equation.
-18 + 18 + 1a = -28 + 18

Combine like terms: -18 + 18 = 0
0 + 1a = -28 + 18
1a = -28 + 18

Combine like terms: -28 + 18 = -10
1a = -10

Divide each side by '1'.
a = -10

Simplifying
a = -10

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