2a+9=3

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Solution for 2a+9=3 equation: 


Simplifying
2a + 9 = 3

Reorder the terms:
9 + 2a = 3

Solving
9 + 2a = 3

Solving for variable 'a'.

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

Add '-9' to each side of the equation.
9 + -9 + 2a = 3 + -9

Combine like terms: 9 + -9 = 0
0 + 2a = 3 + -9
2a = 3 + -9

Combine like terms: 3 + -9 = -6
2a = -6

Divide each side by '2'.
a = -3

Simplifying
a = -3

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