0.5(25-5a)=4-a

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Solution for 0.5(25-5a)=4-a equation: 


Simplifying
0.5(25 + -5a) = 4 + -1a
(25 * 0.5 + -5a * 0.5) = 4 + -1a
(12.5 + -2.5a) = 4 + -1a

Solving
12.5 + -2.5a = 4 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
12.5 + -2.5a + a = 4 + -1a + a

Combine like terms: -2.5a + a = -1.5a
12.5 + -1.5a = 4 + -1a + a

Combine like terms: -1a + a = 0
12.5 + -1.5a = 4 + 0
12.5 + -1.5a = 4

Add '-12.5' to each side of the equation.
12.5 + -12.5 + -1.5a = 4 + -12.5

Combine like terms: 12.5 + -12.5 = 0.0
0.0 + -1.5a = 4 + -12.5
-1.5a = 4 + -12.5

Combine like terms: 4 + -12.5 = -8.5
-1.5a = -8.5

Divide each side by '-1.5'.
a = 5.666666667

Simplifying
a = 5.666666667

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