Answer:
n=-6
Step-by-step explanation:
5n-42=12n
5n=12n+24
5n-12n=42
-7n=42
divide each side by -7
n does =-6
5n-42+42=12n+42
5n=12n+42
5n-12n=12n+42-12n
-7n/-7 = 42/-7
n= -6
