Answer:
n = 28
Step-by-step explanation:
Given
[tex]\frac{3}{4}[/tex] n - 18 = [tex]\frac{1}{4}[/tex] n - 4 ( multiply through by 4 to clear the fractions )
3n - 72 = n - 16 ( subtract n from both sides )
2n - 72 = - 16 ( add 72 to both sides )
2n = 56 ( divide both sides by 2 )
n = 28
