23=0.5(a+28)

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Solution for 23=0.5(a+28) equation:


Simplifying
23 = 0.5(a + 28)

Reorder the terms:
23 = 0.5(28 + a)
23 = (28 * 0.5 + a * 0.5)
23 = (14 + 0.5a)

Solving
23 = 14 + 0.5a

Solving for variable 'a'.

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

Add '-0.5a' to each side of the equation.
23 + -0.5a = 14 + 0.5a + -0.5a

Combine like terms: 0.5a + -0.5a = 0.0
23 + -0.5a = 14 + 0.0
23 + -0.5a = 14

Add '-23' to each side of the equation.
23 + -23 + -0.5a = 14 + -23

Combine like terms: 23 + -23 = 0
0 + -0.5a = 14 + -23
-0.5a = 14 + -23

Combine like terms: 14 + -23 = -9
-0.5a = -9

Divide each side by '-0.5'.
a = 18

Simplifying
a = 18

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