a+4b=-2

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Solution for a+4b=-2 equation: 


Simplifying
a + 4b = -2

Solving
a + 4b = -2

Solving for variable 'a'.

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

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

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

Simplifying
a = -2 + -4b

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