Answer:
n = 28
Explanation:
3/4n - 18 = 1/4n - 4 (eliminate fractions by multiplying each value by 4)
(3/4n * 4) - (18 * 4) = (1/4n * 4) - (4 * 4)
3n - 72 = 1n - 16 (move values with variable to same side)
3n - 1n - 72 = 1n - 1n -16
2n - 72 = -16 (move numeric values to same side)
2n - 72 + 72 = -16 + 72
2n = 56 (isolate n by dividing out the 2)
2n/2 = 56/2
n = 28