6a+7a=-15

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Solution for 6a+7a=-15 equation: 


Simplifying
6a + 7a = -15

Combine like terms: 6a + 7a = 13a
13a = -15

Solving
13a = -15

Solving for variable 'a'.

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

Divide each side by '13'.
a = -1.153846154

Simplifying
a = -1.153846154

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