9a=20+4a

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Solution for 9a=20+4a equation: 


Simplifying
9a = 20 + 4a

Solving
9a = 20 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
9a + -4a = 20 + 4a + -4a

Combine like terms: 9a + -4a = 5a
5a = 20 + 4a + -4a

Combine like terms: 4a + -4a = 0
5a = 20 + 0
5a = 20

Divide each side by '5'.
a = 4

Simplifying
a = 4

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