2a+2b=4

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Solution for 2a+2b=4 equation: 


Simplifying
2a + 2b = 4

Solving
2a + 2b = 4

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.
2a + 2b + -2b = 4 + -2b

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

Divide each side by '2'.
a = 2 + -1b

Simplifying
a = 2 + -1b

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