4a+9=a

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Solution for 4a+9=a equation:


Simplifying
4a + 9 = a

Reorder the terms:
9 + 4a = a

Solving
9 + 4a = 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.
9 + 4a + -1a = a + -1a

Combine like terms: 4a + -1a = 3a
9 + 3a = a + -1a

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

Add '-9' to each side of the equation.
9 + -9 + 3a = 0 + -9

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

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

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

Simplifying
a = -3

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