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7n+28=7(n+3)
We simplify the equation to the form, which is simple to understand
7n+28=7(n+3)
Reorder the terms in parentheses
7n+28=+(+7n+21)
Remove unnecessary parentheses
+7n+28=+7n+21
We move all terms containing n to the left and all other terms to the right.
+7n-7n=+21-28
We simplify left and right side of the equation.
n=-7
0=-7
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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