7a-4a=-15.5

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Solution for 7a-4a=-15.5 equation: 


Simplifying
7a + -4a = -15.5

Combine like terms: 7a + -4a = 3a
3a = -15.5

Solving
3a = -15.5

Solving for variable 'a'.

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

Divide each side by '3'.
a = -5.166666667

Simplifying
a = -5.166666667

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