-21-4n=-3(7-7n)

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Solution for -21-4n=-3(7-7n) equation:


-21-4n=-3(7-7n)

We simplify the equation to the form, which is simple to understand 
-21-4n=-3(7-7n)

Reorder the terms in parentheses
-21-4n=+(-21+21n)

Remove unnecessary parentheses
-21-4n=-21+21n

We move all terms containing n to the left and all other terms to the right. 
-4n-21n=-21+21

We simplify left and right side of the equation. 
-25n=0

We divide both sides of the equation by -25 to get n. 
n=-0

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