7a+3c=-12

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Solution for 7a+3c=-12 equation: 


Simplifying
7a + 3c = -12

Solving
7a + 3c = -12

Solving for variable 'a'.

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

Add '-3c' to each side of the equation.
7a + 3c + -3c = -12 + -3c

Combine like terms: 3c + -3c = 0
7a + 0 = -12 + -3c
7a = -12 + -3c

Divide each side by '7'.
a = -1.714285714 + -0.4285714286c

Simplifying
a = -1.714285714 + -0.4285714286c

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