Question

75:?=9(ост?) ?•8:7=9(ост?)

Answer 1

75:8=9(ост 3)
8*8:7=9(ост 1)

Answer 2

It seems like you've provided an equation with some missing values represented by question marks. To solve this equation, we need to determine the values that make it true. However, it's not entirely clear what you mean by "(ост?)" in the equation. If you can provide more context or clarification, I'd be happy to help you solve the equation.