4a+2b+c=-21

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Solution for 4a+2b+c=-21 equation:


Simplifying
4a + 2b + c = -21

Solving
4a + 2b + c = -21

Solving for variable 'a'.

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

Add '-2b' to each side of the equation.
4a + 2b + -2b + c = -21 + -2b

Combine like terms: 2b + -2b = 0
4a + 0 + c = -21 + -2b
4a + c = -21 + -2b

Add '-1c' to each side of the equation.
4a + c + -1c = -21 + -2b + -1c

Combine like terms: c + -1c = 0
4a + 0 = -21 + -2b + -1c
4a = -21 + -2b + -1c

Divide each side by '4'.
a = -5.25 + -0.5b + -0.25c

Simplifying
a = -5.25 + -0.5b + -0.25c

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