2x+a=4

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Solution for 2x+a=4 equation: 


Simplifying
2x + a = 4

Reorder the terms:
a + 2x = 4

Solving
a + 2x = 4

Solving for variable 'a'.

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

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

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

Simplifying
a = 4 + -2x

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