How do you solve $4 n - 40 = 7 (- 2 n + 2)$ $4n-40=7(-2n+2)$ ?

Question

8118 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-10-05T15:55:14

$n = 3$ $n = 3$

First you want to use the foil method to solve the right side of the equation:

$4 n - 40 = - 14 n + 14$ $4n-40 = -14n+14$

Then you move the $- 14 n$ $-14n$ and the $- 40$ $-40$ over to the opposite sides:

$4n+color(blue)(14n) color(red)cancel(color(black)(-40)) = color(red)cancel(color(black)(-14n))+color(blue)(40)+14$

$18n = 54$

Then divide $54$ by $18$ :

$n = 3$

How do you solve 4n-40=7(-2n+2)4n−40=7(−2n+2)4n-40=7(-2n+2)?