10a-9=-79

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Solution for 10a-9=-79 equation: 


Simplifying
10a + -9 = -79

Reorder the terms:
-9 + 10a = -79

Solving
-9 + 10a = -79

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 9 + 10a = -79 + 9

Combine like terms: -9 + 9 = 0
0 + 10a = -79 + 9
10a = -79 + 9

Combine like terms: -79 + 9 = -70
10a = -70

Divide each side by '10'.
a = -7

Simplifying
a = -7

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