7a-2a=-15

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Solution for 7a-2a=-15 equation: 


Simplifying
7a + -2a = -15

Combine like terms: 7a + -2a = 5a
5a = -15

Solving
5a = -15

Solving for variable 'a'.

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

Divide each side by '5'.
a = -3

Simplifying
a = -3

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