-9a=40a

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Solution for -9a=40a equation: 


Simplifying
-9a = 40a

Solving
-9a = 40a

Solving for variable 'a'.

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

Add '-40a' to each side of the equation.
-9a + -40a = 40a + -40a

Combine like terms: -9a + -40a = -49a
-49a = 40a + -40a

Combine like terms: 40a + -40a = 0
-49a = 0

Divide each side by '-49'.
a = 0

Simplifying
a = 0

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