What is 23/40 minus 22/30? use benchmark

Answer 1

http://www.mathsisfun.com/fractions_subtraction.html
Read carefully and follow the directions.

If you post your answer, a math tutor will check for you.

Answer 2

23/40-23/30

23/40-11/15

23*3/40*3-11*8/15*8

69/120-88/120

69-88/120

= -19/20

Answer 3

23/40 - 23/30
= 23(1/40 - 1/30)
= 23(3/120 - 4/120)
= 23(-1/120)
= -23/120

Note above that 23/30 is not 11/15.

Answer 4

Oops - my bad. I misread it.

Embershy is correct

Answer 5

11\30 23\40