3a+2a=4-a

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Solution for 3a+2a=4-a equation: 


Simplifying
3a + 2a = 4 + -1a

Combine like terms: 3a + 2a = 5a
5a = 4 + -1a

Solving
5a = 4 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
5a + a = 4 + -1a + a

Combine like terms: 5a + a = 6a
6a = 4 + -1a + a

Combine like terms: -1a + a = 0
6a = 4 + 0
6a = 4

Divide each side by '6'.
a = 0.6666666667

Simplifying
a = 0.6666666667

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