Answer: c = 24
Explanation:
10 + 5/12c = 20
10 + (5 * c)/12 = 20
10 + 5c/12 = 20 (Take 12 as LCM)
(10 * 12)/12 + 5c/12 = 20
120/12 + 5c/12 = 20 (Shift 12 to RHS)
120 + 5c = 20 * 12
120 + 5c = 240
5c = 240 - 120
5c = 120 (Shift 5 to RHS)
c = 120/5
=> c = 24
Therefore, c = 24