keeping in mind that a year has 12 months, thus 6 months is really 6/12 of a year.
5(n-4)=(4n-12)
First: Distribute 5 into n and -4.
5(n-4)=(5n)+(5*-4)= 5n-20.
Second: Subtract 4n from both sides to eliminate the variable from the right side of the equation.
(5n-20)=(4n-12)
n-20=-12
Next: Add 20 to both sides to eliminate the constant from the left side of the equation.
n-20=-12
n=8
The unknown number is 8.
It’s answer A I believe bc none of the others check out
Idk but when I solved it out I got 120 >_ 2160 <_ 90
