Question

I need help with question i went to a 81 to a 57 and know that i think about it i should have kept the 81 but PLEASE help me

Answer 1

The = sign

Explanation:

`(7)/(8) -(9)/(12) =(1)/(8)`

1/8 = 1/8

Answer 2

Answer: =

Explanation:

`(7)/(8)-(9)/(12) ?(1)/(8)`

We need to find a common denominator for the two

which will be 24

But we need to multiply the numerators as well to change them.

`(7)/(8)((3)/(3))-(9)/(12) ((2)/(2) )?(1)/(8)\\(21)/(24)-(18)/(24)? (1)/(8)\\(3)/(24) ?(1)/(8)\\Simplify\\(1)/(8) =(1)/(8)`