.333(21-3a)=6-a

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Solution for .333(21-3a)=6-a equation:


Simplifying
0.333(21 + -3a) = 6 + -1a
(21 * 0.333 + -3a * 0.333) = 6 + -1a
(6.993 + -0.999a) = 6 + -1a

Solving
6.993 + -0.999a = 6 + -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.
6.993 + -0.999a + a = 6 + -1a + a

Combine like terms: -0.999a + a = 0.001a
6.993 + 0.001a = 6 + -1a + a

Combine like terms: -1a + a = 0
6.993 + 0.001a = 6 + 0
6.993 + 0.001a = 6

Add '-6.993' to each side of the equation.
6.993 + -6.993 + 0.001a = 6 + -6.993

Combine like terms: 6.993 + -6.993 = 0.000
0.000 + 0.001a = 6 + -6.993
0.001a = 6 + -6.993

Combine like terms: 6 + -6.993 = -0.993
0.001a = -0.993

Divide each side by '0.001'.
a = -993

Simplifying
a = -993

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