0.5(220-a)=99

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Solution for 0.5(220-a)=99 equation:


Simplifying
0.5(220 + -1a) = 99
(220 * 0.5 + -1a * 0.5) = 99
(110 + -0.5a) = 99

Solving
110 + -0.5a = 99

Solving for variable 'a'.

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

Add '-110' to each side of the equation.
110 + -110 + -0.5a = 99 + -110

Combine like terms: 110 + -110 = 0
0 + -0.5a = 99 + -110
-0.5a = 99 + -110

Combine like terms: 99 + -110 = -11
-0.5a = -11

Divide each side by '-0.5'.
a = 22

Simplifying
a = 22

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