12-7x=78-21x

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Solution for 12-7x=78-21x equation:


12-7x=78-21x

We simplify the equation to the form, which is simple to understand 
12-7x=78-21x

We move all terms containing x to the left and all other terms to the right. 
-7x+21x=+78-12

We simplify left and right side of the equation. 
+14x=+66

We divide both sides of the equation by 14 to get x. 
x=4.71428571429

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