7a+2a=-9

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Solution for 7a+2a=-9 equation: 


Simplifying
7a + 2a = -9

Combine like terms: 7a + 2a = 9a
9a = -9

Solving
9a = -9

Solving for variable 'a'.

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

Divide each side by '9'.
a = -1

Simplifying
a = -1

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