-4a=9-7a

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Solution for -4a=9-7a equation: 


Simplifying
-4a = 9 + -7a

Solving
-4a = 9 + -7a

Solving for variable 'a'.

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

Add '7a' to each side of the equation.
-4a + 7a = 9 + -7a + 7a

Combine like terms: -4a + 7a = 3a
3a = 9 + -7a + 7a

Combine like terms: -7a + 7a = 0
3a = 9 + 0
3a = 9

Divide each side by '3'.
a = 3

Simplifying
a = 3

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