4a-2r=-4

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Solution for 4a-2r=-4 equation: 


Simplifying
4a + -2r = -4

Solving
4a + -2r = -4

Solving for variable 'a'.

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

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

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

Divide each side by '4'.
a = -1 + 0.5r

Simplifying
a = -1 + 0.5r

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