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2(-21x+3)=0
We simplify the equation to the form, which is simple to understand
2(-21x+3)=0
Reorder the terms in parentheses
+(-42x+6)=0
Remove unnecessary parentheses
-42x+6=0
We move all terms containing x to the left and all other terms to the right.
-42x=0-6
We simplify left and right side of the equation.
-42x=-6
We divide both sides of the equation by -42 to get x.
x=0.14285714285714
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