5.6/1,9-7,5

Interpret the expression as (5.6 / 1.9) - 7.5.

• 5.6 / 1.9 = 56/19 ≈ 2.947368421
• 7.5 = 15/2

So (56/19) - (15/2) = (112 - 285) / 38 = -173/38 ≈ -4.552631579

Final answer: -173/38 ≈ -4.5526 (about -4.55 to two decimals). If you meant a different grouping, let me know.