If 3a/b -6= 21, what is the value of a/b?

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9