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2x+1=3(x+7)
We simplify the equation to the form, which is simple to understand
2x+1=3(x+7)
Reorder the terms in parentheses
2x+1=+(+3x+21)
Remove unnecessary parentheses
+2x+1=+3x+21
We move all terms containing x to the left and all other terms to the right.
+2x-3x=+21-1
We simplify left and right side of the equation.
-1x=+20
We divide both sides of the equation by -1 to get x.
x=-20
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