Question

Can someone help me solve this please! I need to find what N equals!

Answer 1

$\frac{12-n}{7} = - 1$
Multiply cross
$12-n = 7*(-1)$
$12-n = -7$
Number with incognito are to the left of the equality and numbers without incognito are to the right, remembering that when changing of side changes the signal.
$-n = -7-12$
$-n=-19$ simplify by (-1)
$\boxed{n = 19}$

Confirm that the solution is correct:

$\frac{12-n}{7} = - 1$
$\frac{12-19}{7} = - 1$
$\frac{-7}{7} = - 1$
$\boxed{-1=-1}(TRUE)$

Answer:
$\boxed{n = 19}$

Answer 2

[ (12 - n)/7 ] = -1

12- n = -7

-n = -19

n = 19