Respuesta :

taskmasters
The least common denominator of 6/7, 3/5, and 1/4 is D. 140

The LCD of 3/5 and 1/4 is 20. However, 6/7 must be considered.
So, 20 x 7 = 140.

140 ÷ 7 = 20
140 ÷ 5 = 28
140 ÷ 4 = 35

Least common denominator is need when we add or subtract fractions.

mrvenompcz

Answer:

D. 140

Step-by-step explanation: