3a-15=-6

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Solution for 3a-15=-6 equation: 


Simplifying
3a + -15 = -6

Reorder the terms:
-15 + 3a = -6

Solving
-15 + 3a = -6

Solving for variable 'a'.

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

Add '15' to each side of the equation.
-15 + 15 + 3a = -6 + 15

Combine like terms: -15 + 15 = 0
0 + 3a = -6 + 15
3a = -6 + 15

Combine like terms: -6 + 15 = 9
3a = 9

Divide each side by '3'.
a = 3

Simplifying
a = 3

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