Question

Help on this please!

Answer 1

`(2)/(9)` -
`(7)/(12)`
Make the two fractions have common denominators. 9 and 12 both fit into 36, so multiply the top and bottom of
`(2)/(9)` by 4 and
`(7)/(12)` by 3.


`(2)/(9)` ⇒
`(8)/(36)`

`(7)/(12)` ⇒
`(21)/(36)`

Now that both fractions have common denominators, you can subtract them easily. Subtract the numerators (8 - 21) and keep the denominators the same.


`(8)/(36)` -
`(21)/(36)` =
`(-13)/(36)`

a = -13
b = 36