4a=20+9a

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Solution for 4a=20+9a equation: 


Simplifying
4a = 20 + 9a

Solving
4a = 20 + 9a

Solving for variable 'a'.

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

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

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

Combine like terms: 9a + -9a = 0
-5a = 20 + 0
-5a = 20

Divide each side by '-5'.
a = -4

Simplifying
a = -4

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