3=-3(7-2n)-4(n-7)

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Solution for 3=-3(7-2n)-4(n-7) equation:


3=-3 (7-2n)-4 (n-7)

We simplify the equation to the form, which is simple to understand
3=-3(7-2n)-4(n-7)

Reorder the terms in parentheses
3=+(-21+6n)-4*(n-7)

Remove unnecessary parentheses
+3=-21+6n-4+*(+n-7+)

Reorder the terms in parentheses
3=-21+6n+(-4n+28)

Remove unnecessary parentheses
+3=-21+6n-4n+28

We move all terms containing n to the left and all other terms to the right.
-6n+4n=-21+28-3

We simplify left and right side of the equation.
-2n=+4

We divide both sides of the equation by -2 to get n.
n=-2

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