6=a+9

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Solution for 6=a+9 equation:


Simplifying
6 = a + 9

Reorder the terms:
6 = 9 + a

Solving
6 = 9 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
6 + -1a = 9 + a + -1a

Combine like terms: a + -1a = 0
6 + -1a = 9 + 0
6 + -1a = 9

Add '-6' to each side of the equation.
6 + -6 + -1a = 9 + -6

Combine like terms: 6 + -6 = 0
0 + -1a = 9 + -6
-1a = 9 + -6

Combine like terms: 9 + -6 = 3
-1a = 3

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

Simplifying
a = -3

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