Respuesta :
So you're trying to find what number is like that right? Well multiply the denominator by the 20 (20*4) which equals 100, so 100-20 (the one fourth) is 80. So 3/4 fourths of 100 is 20.
Divide 20 by 4 which equals 5. Now multiply 3 and 5, that equals 15. So 3/4 = 15 over 20. I think this is correct.