What is 23/40 minus 22/30? use benchmark
http://www.mathsisfun.com/fractions_subtraction.html
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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
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.
Oops - my bad. I misread it.
Embershy is correct
11\30 23\40
To subtract fractions, we need to have the same denominator. In this case, the benchmark is to find a common denominator for 40 and 30. Let's find the Least Common Multiple (LCM) of 40 and 30, which is 120.
To convert the fractions to the common denominator of 120:
- For 23/40, we need to multiply both the numerator and denominator by 3 (120 ÷ 40 = 3).
- For 22/30, we need to multiply both the numerator and denominator by 4 (120 ÷ 30 = 4).
Converting the fractions, we get:
23/40 = 69/120
22/30 = 88/120
Now that we have the fractions with the same denominator, we can subtract them:
69/120 - 88/120
To subtract the fractions, we subtract their numerators and keep the denominator unchanged:
(69 - 88)/120
Calculating the numerator:
69 - 88 = -19
Therefore, the result of 23/40 minus 22/30 is -19/120.