Answer: 23/20 or 1 3/20 20 is the common denominator
Step-by-step explanation: Step One: multiply denominators Take the 5 out of 2/5 and take the 4 out of 3/4 and multiply them 5 times 4 = 20 Step 2: add numerator Then Add the 2 out of 2/5 to the 3 out of 3/4 leaving you with 5/20. Step 3: find answer for your equation it simplify's to 1 3/20 or 23/20 in a improper fraction.