3a+4a=28

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Solution for 3a+4a=28 equation: 


Simplifying
3a + 4a = 28

Combine like terms: 3a + 4a = 7a
7a = 28

Solving
7a = 28

Solving for variable 'a'.

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

Divide each side by '7'.
a = 4

Simplifying
a = 4

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