4a-5-2a+9=28

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Solution for 4a-5-2a+9=28 equation:


Simplifying
4a + -5 + -2a + 9 = 28

Reorder the terms:
-5 + 9 + 4a + -2a = 28

Combine like terms: -5 + 9 = 4
4 + 4a + -2a = 28

Combine like terms: 4a + -2a = 2a
4 + 2a = 28

Solving
4 + 2a = 28

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 2a = 28 + -4

Combine like terms: 4 + -4 = 0
0 + 2a = 28 + -4
2a = 28 + -4

Combine like terms: 28 + -4 = 24
2a = 24

Divide each side by '2'.
a = 12

Simplifying
a = 12

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