9=3-a

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Solution for 9=3-a equation:


Simplifying
9 = 3 + -1a

Solving
9 = 3 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
9 + a = 3 + -1a + a

Combine like terms: -1a + a = 0
9 + a = 3 + 0
9 + a = 3

Add '-9' to each side of the equation.
9 + -9 + a = 3 + -9

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

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

Simplifying
a = -6

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