2+3a+4a=28

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Solution for 2+3a+4a=28 equation: 


Simplifying
2 + 3a + 4a = 28

Combine like terms: 3a + 4a = 7a
2 + 7a = 28

Solving
2 + 7a = 28

Solving for variable 'a'.

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

Add '-2' to each side of the equation.
2 + -2 + 7a = 28 + -2

Combine like terms: 2 + -2 = 0
0 + 7a = 28 + -2
7a = 28 + -2

Combine like terms: 28 + -2 = 26
7a = 26

Divide each side by '7'.
a = 3.714285714

Simplifying
a = 3.714285714

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