How do you solve -12n-19=7712n19=77?

1 Answer
Jan 20, 2017

See the entire solution process below

Explanation:

Step 1) Add color(red)(19)19 to each side of the equation to isolate the nn term while keeping the equation balanced:

-12n - 19 + color(red)(19) = 77 + color(red)(19)12n19+19=77+19

-12n - 0 = 9612n0=96

-12n = 9612n=96

Step 2) Divide each side of the equation by color(red)(-12)12 to solve for nn while keeping the equation balanced:

(-12n)/color(red)(-12) = 96/color(red)(-12)12n12=9612

(color(red)(cancel(color(black)(-12)))n)/cancel(color(red)(-12)) = -8

n = -8