Problem: 5/8x+3/5=8
Want is 5/8+3/5=8
5/8 x + 3/5 = 8
5/8 x + 3/5 - 3/5 = 8 - 3/5
5/8 x = 7 2/5 = 37/5
(5/8 x) * (8/5) = (37/5) * (8/5)
x = 296/25
Check.
5/8 x + 3/5 = 8
5/8 (296/25) + 3/5 = 8
37/5 + 3/5 = 8
40/5 = 8
8 = 8
Answer: x = 296/25
x = 11 21/25