Question

Y: 6-63:78.b = 100 - 68​

Answer 1

Пошаговое объяснение:

y:6=63:7

y:6=9

y=9×6

y=54

54:6-63:7

Answer 2

It seems like you've provided an equation:

Y: 6-63:78.b = 100 - 68

However, this equation contains some unusual notation, and it's not clear what you're trying to solve or calculate.

Could you please provide more context or clarify what you want to do with this equation?