9a-3b=-13

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Solution for 9a-3b=-13 equation: 


Simplifying
9a + -3b = -13

Solving
9a + -3b = -13

Solving for variable 'a'.

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

Add '3b' to each side of the equation.
9a + -3b + 3b = -13 + 3b

Combine like terms: -3b + 3b = 0
9a + 0 = -13 + 3b
9a = -13 + 3b

Divide each side by '9'.
a = -1.444444444 + 0.3333333333b

Simplifying
a = -1.444444444 + 0.3333333333b

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