21a-34a=9

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Solution for 21a-34a=9 equation: 


Simplifying
21a + -34a = 9

Combine like terms: 21a + -34a = -13a
-13a = 9

Solving
-13a = 9

Solving for variable 'a'.

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

Divide each side by '-13'.
a = -0.6923076923

Simplifying
a = -0.6923076923

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