12x+72x=21

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Solution for 12x+72x=21 equation:


12x+72x=21

We simplify the equation to the form, which is simple to understand 
12x+72x=21

We move all terms containing x to the left and all other terms to the right. 
+12x+72x=+21

We simplify left and right side of the equation. 
+84x=+21

We divide both sides of the equation by 84 to get x. 
x=0.25

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