28=16-4a

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Solution for 28=16-4a equation:


Simplifying
28 = 16 + -4a

Solving
28 = 16 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
28 + 4a = 16 + -4a + 4a

Combine like terms: -4a + 4a = 0
28 + 4a = 16 + 0
28 + 4a = 16

Add '-28' to each side of the equation.
28 + -28 + 4a = 16 + -28

Combine like terms: 28 + -28 = 0
0 + 4a = 16 + -28
4a = 16 + -28

Combine like terms: 16 + -28 = -12
4a = -12

Divide each side by '4'.
a = -3

Simplifying
a = -3

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