3x+21x=12

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Solution for 3x+21x=12 equation: 


Simplifying
3x + 21x = 12

Combine like terms: 3x + 21x = 24x
24x = 12

Solving
24x = 12

Solving for variable 'x'.

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

Divide each side by '24'.
x = 0.5

Simplifying
x = 0.5

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