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3(7+2x)=30+7x-1
We simplify the equation to the form, which is simple to understand
3(7+2x)=30+7x-1
Reorder the terms in parentheses
+(+21+6x)=30+7x-1
Remove unnecessary parentheses
+21+6x=+30+7x-1
We move all terms containing x to the left and all other terms to the right.
+6x-7x=+30-1-21
We simplify left and right side of the equation.
-1x=+8
We divide both sides of the equation by -1 to get x.
x=-8
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