Question

(1/3-1/4):(2/5-1/10)2

Answer 1

1/3-1/4=4/12-3/12=1/12
2/5-1/10=4/10-1/10=3/10×2=6/10
1/12:6/10=1/12×10/6=10/72=5/36
R:5/36