3a+3b+c=-13

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Solution for 3a+3b+c=-13 equation: 


Simplifying
3a + 3b + c = -13

Solving
3a + 3b + c = -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.
3a + 3b + -3b + c = -13 + -3b

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

Add '-1c' to each side of the equation.
3a + c + -1c = -13 + -3b + -1c

Combine like terms: c + -1c = 0
3a + 0 = -13 + -3b + -1c
3a = -13 + -3b + -1c

Divide each side by '3'.
a = -4.333333333 + -1b + -0.3333333333c

Simplifying
a = -4.333333333 + -1b + -0.3333333333c

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