.33(x+21)=12

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Solution for .33(x+21)=12 equation: 


Simplifying
0.33(x + 21) = 12

Reorder the terms:
0.33(21 + x) = 12
(21 * 0.33 + x * 0.33) = 12
(6.93 + 0.33x) = 12

Solving
6.93 + 0.33x = 12

Solving for variable 'x'.

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

Add '-6.93' to each side of the equation.
6.93 + -6.93 + 0.33x = 12 + -6.93

Combine like terms: 6.93 + -6.93 = 0.00
0.00 + 0.33x = 12 + -6.93
0.33x = 12 + -6.93

Combine like terms: 12 + -6.93 = 5.07
0.33x = 5.07

Divide each side by '0.33'.
x = 15.36363636

Simplifying
x = 15.36363636

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