3a+8+a=28

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Solution for 3a+8+a=28 equation: 


Simplifying
3a + 8 + a = 28

Reorder the terms:
8 + 3a + a = 28

Combine like terms: 3a + a = 4a
8 + 4a = 28

Solving
8 + 4a = 28

Solving for variable 'a'.

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

Add '-8' to each side of the equation.
8 + -8 + 4a = 28 + -8

Combine like terms: 8 + -8 = 0
0 + 4a = 28 + -8
4a = 28 + -8

Combine like terms: 28 + -8 = 20
4a = 20

Divide each side by '4'.
a = 5

Simplifying
a = 5

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