How do you do this equation?

-30n = -27n - 63

-30n+27n=-63

(multiply with -(minus)sign on both sides)

30n-27n=63

3n=63

n=63/3

n=21
Good Luck!

-30n = -27n - 63
-30n + 27n = -63
-3n = -63
n = -63/-3
n = 21

63 = - 27n + 30n
63 = 3 n
n = 21

put n=21
:-)

-30n = -27n - 63

bring -27n to the left Hand Side, and it changes sign

-30n + 27n = -63
-3n = -63

then bring down the 3 from the left hand side to the right hand side and become the denominator..

n=-63/-3
n= 21 (ans)

-30n = -27n - 63 add 27n to both sides
-3n= -63 divide both sides by -3
n = 21

-30n=-27n-63

or, -30n+27n=-63

or, -3n=-63

or n=(-63)/(-3)=21.